| June 27, 1949 | Eisler v. United States | Per curiam | 338 U.S. 189 (1949) | 117 |
| June 27, 1949 | Brinegar v. United States | Wiley Blount Rutledge | 338 U.S. 160 (1949) | 6013 |
| June 27, 1949 | Securities and Exchange Commission v. Central-Illinois Securities Corp. et al. | Wiley Blount Rutledge | 338 U.S. 96 (1949) | – |
| June 27, 1949 | Christoffel v. United States | Frank Murphy | 338 U.S. 84 (1949) | – |
| June 27, 1949 | Lustig v. United States | Felix Frankfurter | 338 U.S. 74 (1949) | 415 |
| June 27, 1949 | Harris v. South Carolina | Felix Frankfurter | 338 U.S. 68 (1949) | 204 |
| June 27, 1949 | Turner v. Pennsylvania | Felix Frankfurter | 338 U.S. 62 (1949) | 277 |
| June 27, 1949 | Watts v. Indiana | Felix Frankfurter | 338 U.S. 49 (1949) | 831 |
| June 27, 1949 | Wolf v. Colorado | Felix Frankfurter | 338 U.S. 25 (1949) | 1554 |
| June 27, 1949 | Kimball Laundry Co. v. United States | Felix Frankfurter | 338 U.S. 1 (1949) | 443 |
| June 27, 1949 | Fink v. Shepard Steamship Co. | Stanley Forman Reed | 337 U.S. 810 (1949) | – |
| June 27, 1949 | Weade et al. v. Dichmann, Wright & Pugh, Inc. | Stanley Forman Reed | 337 U.S. 801 (1949) | – |
| June 27, 1949 | Cosmopolitan Shipping Co. v. McAllister | Stanley Forman Reed | 337 U.S. 783 (1949) | 311 |
| June 27, 1949 | Gibbs v. Burke, Warden | Stanley Forman Reed | 337 U.S. 773 (1949) | 150 |
| June 27, 1949 | Farmers Reservoir & Irrigation Co. v. McComb, Wage & Hour Administrator | Frederick Moore Vinson | 337 U.S. 755 (1949) | 170 |
| June 27, 1949 | Commissioner of Internal Revenue v. Culbertson et Ux. | Frederick Moore Vinson | 337 U.S. 733 (1949) | 1129 |
| June 27, 1949 | Larson, War Assets Administrator and Surplus Property Administrator, v. Domestic and Foreign Commerce Corp. | Frederick Moore Vinson | 337 U.S. 682 (1949) | 1701 |
| June 20, 1949 | Interstate Oil Pipe Line Co. v. Stone, Chairman State Tax Commission | Wiley Blount Rutledge | 337 U.S. 662 (1949) | – |
| June 20, 1949 | National Labor Relations Board v. Pittsburgh Steamship Co. | Wiley Blount Rutledge | 337 U.S. 656 (1949) | 127 |
| June 20, 1949 | National Mutual Insurance Co. v. Tidewater Transfer Co., Inc. | Robert Houghwout Jackson | 337 U.S. 582 (1949) | 328 |
| June 20, 1949 | Wheeling Steel Corp. v. Glander, Tax Commissioner of Ohio | Robert Houghwout Jackson | 337 U.S. 562 (1949) | 126 |
| June 20, 1949 | Cohen, Executrix, et al. v. Beneficial Industrial Loan Corp. et al. | Robert Houghwout Jackson | 337 U.S. 541 (1949) | 10863 |
| June 20, 1949 | Woods v. Interstate Realty Co. | William Orville Douglas | 337 U.S. 535 (1949) | 479 |
| June 20, 1949 | Ragan v. Merchants Transfer & Warehouse Co. | William Orville Douglas | 337 U.S. 530 (1949) | 503 |
| June 20, 1949 | Aeronautical Industrial District Lodge 727 v. Campbell et al. | Felix Frankfurter | 337 U.S. 521 (1949) | 124 |
| June 20, 1949 | Federal Power Commission v. Panhandle Eastern Pipe Line Co. et al. | Stanley Forman Reed | 337 U.S. 498 (1949) | 170 |
| June 20, 1949 | Propper, Receiver, v. Clark, Attorney General, as Successor to the Alien Property Custodian, et al. | Stanley Forman Reed | 337 U.S. 472 (1949) | 311 |
| June 20, 1949 | United States v. Interstate Commerce Commission et al. | Hugo Lafayette Black | 337 U.S. 426 (1949) | – |
| June 13, 1949 | Commissioner of Internal Revenue v. Wodehouse | Harold Hitz Burton | 337 U.S. 369 (1949) | – |
| June 13, 1949 | United States v. Wittek | Harold Hitz Burton | 337 U.S. 346 (1949) | – |
| June 13, 1949 | United States v. Cors | William Orville Douglas | 337 U.S. 325 (1949) | 187 |
| June 13, 1949 | Standard Oil Company of California et al. v. United States | Felix Frankfurter | 337 U.S. 293 (1949) | 495 |
| June 13, 1949 | Joy Oil Co., Ltd. v. State Tax Commission | Felix Frankfurter | 337 U.S. 286 (1949) | – |
| June 6, 1949 | Federal Communications Commission v. Wjr, the Goodwill Station, Inc. et al. | Wiley Blount Rutledge | 337 U.S. 265 (1949) | 272 |
| June 6, 1949 | City of Morgantown v. Royal Insurance Co., Ltd. | Frank Murphy | 337 U.S. 254 (1949) | 164 |
| June 6, 1949 | Williams v. New York | Hugo Lafayette Black | 337 U.S. 241 (1949) | 2766 |
| June 6, 1949 | Young v. Ragen, Warden | Frederick Moore Vinson | 337 U.S. 235 (1949) | 136 |
| May 31, 1949 | National Labor Relations Board v. Crompton-Highland Mills, Inc. | Harold Hitz Burton | 337 U.S. 217 (1949) | 146 |
| May 31, 1949 | United States v. Penn Foundry & Manufacturing Co., Inc. | Harold Hitz Burton | 337 U.S. 198 (1949) | – |
| May 31, 1949 | Urie v. Thompson, Trustee | Wiley Blount Rutledge | 337 U.S. 163 (1949) | 1351 |
| May 31, 1949 | Empresa Siderurgica, S. a., et al. v. County of Merced et al. | William Orville Douglas | 337 U.S. 154 (1949) | – |
| May 31, 1949 | Smith v. United States | Stanley Forman Reed | 337 U.S. 137 (1949) | 174 |
| May 31, 1949 | Hynes, Regional Director, Fish and Wildlife Service, Department of the Interior, v. Grimes Packing Co. et al. | Stanley Forman Reed | 337 U.S. 86 (1949) | 152 |
| May 31, 1949 | United States v. National City Lines, Inc. et al. | Frederick Moore Vinson | 337 U.S. 78 (1949) | 139 |
| May 31, 1949 | Kilpatrick v. Texas & Pacific Railway Co. | Frederick Moore Vinson | 337 U.S. 75 (1949) | – |
| May 31, 1949 | Ex Parte Collett | Frederick Moore Vinson | 337 U.S. 55 (1949) | 508 |
| May 16, 1949 | Brooks v. United States | Frank Murphy | 337 U.S. 49 (1949) | 344 |
| May 16, 1949 | Union National Bank v. Lamb | William Orville Douglas | 337 U.S. 38 (1949) | 130 |
| May 16, 1949 | Terminiello v. Chicago | William Orville Douglas | 337 U.S. 1 (1949) | 1230 |
| May 9, 1949 | United States Ex Rel. Johnson v. Shaughnessy, Acting District Director of Immigration and Naturalization | Hugo Lafayette Black | 336 U.S. 806 (1949) | – |
| May 2, 1949 | United States v. Urbuteit | Per curiam | 336 U.S. 804 (1949) | – |
| May 2, 1949 | United States v. Wallace & Tiernan Co. et al. | Hugo Lafayette Black | 336 U.S. 793 (1949) | 165 |
| April 25, 1949 | California v. Zook et al. | Frank Murphy | 336 U.S. 725 (1949) | 181 |
| April 25, 1949 | Griffin v. United States | Felix Frankfurter | 336 U.S. 704 (1949) | 107 |
| April 25, 1949 | Humphrey, Warden, v. Smith | Hugo Lafayette Black | 336 U.S. 695 (1949) | 103 |
| April 25, 1949 | Wade v. Hunter, Warden | Hugo Lafayette Black | 336 U.S. 684 (1949) | 1511 |
| April 18, 1949 | Fountain v. Filson et Ux. | Per curiam | 336 U.S. 681 (1949) | 160 |
| April 18, 1949 | Rice v. Rice | Per curiam | 336 U.S. 674 (1949) | – |
| April 18, 1949 | United States v. Jones, Receiver | Wiley Blount Rutledge | 336 U.S. 641 (1949) | – |
| April 18, 1949 | Defense Supplies Corp. et al. v. Lawrence Warehouse Co. et al. | Frank Murphy | 336 U.S. 631 (1949) | – |
| April 18, 1949 | Nye & Nissen, a Corporation, et al. v. United States | William Orville Douglas | 336 U.S. 613 (1949) | 977 |
| April 18, 1949 | Transcontinental & Western Air, Inc. v. Civil Aeronautics Board | William Orville Douglas | 336 U.S. 601 (1949) | – |
| April 18, 1949 | Federal Power Commission et al. v. Interstate Natural Gas Co. et al. | William Orville Douglas | 336 U.S. 577 (1949) | – |
| April 4, 1949 | H. P. Hood & Sons, Inc. v. Du Mond, Commissioner of Agriculture and Markets | Robert Houghwout Jackson | 336 U.S. 525 (1949) | 560 |
| April 4, 1949 | Farrell v. United States et al. | Robert Houghwout Jackson | 336 U.S. 511 (1949) | 403 |
| April 4, 1949 | United States v. Knight | William Orville Douglas | 336 U.S. 505 (1949) | – |
| April 4, 1949 | Giboney et al. v. Empire Storage & Ice Co. | Hugo Lafayette Black | 336 U.S. 490 (1949) | 874 |
| April 4, 1949 | Chicago, Milwaukee, St. Paul & Pacific Railroad Co. et al. v. Acme Fast Freight, Inc. | Frederick Moore Vinson | 336 U.S. 465 (1949) | – |
| March 28, 1949 | United States v. Women'S Sportswear Manufacturers Association et al. | Robert Houghwout Jackson | 336 U.S. 460 (1949) | 202 |
| March 28, 1949 | Krulewitch v. United States | Hugo Lafayette Black | 336 U.S. 440 (1949) | 1293 |
| March 28, 1949 | National Carbide Corp. v. Commissioner of Internal Revenue | Frederick Moore Vinson | 336 U.S. 422 (1949) | 410 |
| March 14, 1949 | Commissioner of Internal Revenue v. Phipps | Frank Murphy | 336 U.S. 410 (1949) | – |
| March 14, 1949 | Black Diamond Steamship Corp. v. Robert Stewart & Sons, Ltd. et al. | Felix Frankfurter | 336 U.S. 386 (1949) | – |
| March 14, 1949 | Stainback, Governor of the Territory of Hawaii, et al. v. Mo Hock Ke Lok Po, an Eleemosynary Corporation, et al. | Stanley Forman Reed | 336 U.S. 368 (1949) | 133 |
| March 7, 1949 | Oklahoma Tax Commission v. Texas Company | Wiley Blount Rutledge | 336 U.S. 342 (1949) | 117 |
| March 7, 1949 | City of New York v. Saper, Trustee in Bankruptcy | Robert Houghwout Jackson | 336 U.S. 328 (1949) | 223 |
| March 7, 1949 | Algoma Plywood & Veneer Co. v. Wisconsin Employment Relations Board | Felix Frankfurter | 336 U.S. 301 (1949) | 172 |
| March 7, 1949 | Foley Bros., Inc. et al. v. Filardo | Stanley Forman Reed | 336 U.S. 281 (1949) | 328 |
| February 28, 1949 | Graver Tank & Mfg. Co., Inc. et al. v. Linde Air Products Co. | Robert Houghwout Jackson | 336 U.S. 271 (1949) | 372 |
| February 28, 1949 | International Union, U. a. W. a., a. F. of L., Local 232, et al. v. Wisconsin Employment Relations Board et al. | Robert Houghwout Jackson | 336 U.S. 245 (1949) | 280 |
| February 28, 1949 | National Labor Relations Board v. Stowe Spinning Co. et al. | Frank Murphy | 336 U.S. 226 (1949) | – |
| February 28, 1949 | Daniel, Attorney General, et al. v. Family Security Life Insurance Co. et al. | Frank Murphy | 336 U.S. 220 (1949) | 153 |
| February 28, 1949 | United States Ex Rel. Hirshberg v. Cooke, Commanding Officer | Hugo Lafayette Black | 336 U.S. 210 (1949) | – |
| February 14, 1949 | Reynolds, Administratrix, v. Atlantic Coast Line Railroad Co. | Per curiam | 336 U.S. 207 (1949) | – |
| February 14, 1949 | Lawson, Deputy Commissioner, United States Employees' Compensation Commission, v. Suwannee Fruit & Steamship Co. et al. | Frank Murphy | 336 U.S. 198 (1949) | 232 |
| February 14, 1949 | McComb, Wage and Hour Administrator, v. Jacksonville Paper Co. et al. | William Orville Douglas | 336 U.S. 187 (1949) | 1180 |
| February 14, 1949 | Wisconsin Electric Power Co. v. United States | Stanley Forman Reed | 336 U.S. 176 (1949) | – |
| February 7, 1949 | Ott, Commissioner of Public Finance, et al. v. Mississippi Valley Barge Line Co. et al. | William Orville Douglas | 336 U.S. 169 (1949) | – |
| February 7, 1949 | Fisher v. Pace, Sheriff | Stanley Forman Reed | 336 U.S. 155 (1949) | 124 |
| February 7, 1949 | Callaway, Trustee, et al. v. Benton et al. | Frederick Moore Vinson | 336 U.S. 132 (1949) | 110 |
| January 31, 1949 | Goggin, Trustee in Bankruptcy, v. Division of Labor Law Enforcement of California | Harold Hitz Burton | 336 U.S. 118 (1949) | – |
| January 31, 1949 | Railway Express Agency, Inc. et al. v. New York | William Orville Douglas | 336 U.S. 106 (1949) | 673 |
| January 31, 1949 | Kovacs v. Cooper, Judge | Stanley Forman Reed | 336 U.S. 77 (1949) | 1120 |
| January 31, 1949 | Wilkerson v. McCarthy et al., Trustees | Hugo Lafayette Black | 336 U.S. 53 (1949) | 493 |
| January 17, 1949 | Commissioner of Internal Revenue v. Jacobson | Harold Hitz Burton | 336 U.S. 28 (1949) | 341 |
| January 17, 1949 | La Crosse Telephone Corp. v. Wisconsin Employment Relations Board et al. | William Orville Douglas | 336 U.S. 18 (1949) | 109 |
| January 17, 1949 | Leiman et al. v. Guttman et al. | William Orville Douglas | 336 U.S. 1 (1949) | – |
| January 17, 1949 | Estate of Spiegel et al. v. Commissioner of Internal Revenue | Hugo Lafayette Black | 335 U.S. 701 (1949) | 162 |
| January 17, 1949 | Commissioner of Internal Revenue v. Estate of Church | Hugo Lafayette Black | 335 U.S. 632 (1949) | 281 |
| January 17, 1949 | Klapprott v. United States | Hugo Lafayette Black | 335 U.S. 601 (1949) | 1144 |
| January 3, 1949 | Henslee, Collector of Internal Revenue, v. Union Planters National Bank & Trust Co. et al. | Per curiam | 335 U.S. 595 (1949) | 422 |
| January 3, 1949 | Ayrshire Collieries Corp. et al. v. United States et al. | William Orville Douglas | 335 U.S. 573 (1949) | – |
| January 3, 1949 | Jungersen v. Ostby & Barton Co. et al. | Stanley Forman Reed | 335 U.S. 560 (1949) | 165 |
| January 3, 1949 | American Federation of Labor et al. v. American Sash & Door Co. et al. | Hugo Lafayette Black | 335 U.S. 538 (1949) | 188 |
| January 3, 1949 | Lincoln Federal Labor Union et al. v. Northwestern Iron & Metal Co. et al. | Hugo Lafayette Black | 335 U.S. 525 (1949) | 288 |
| January 3, 1949 | Coray, Ancillary Administrator, v. Southern Pacific Co. | Hugo Lafayette Black | 335 U.S. 520 (1949) | 151 |
| December 20, 1948 | Frazier v. United States | Wiley Blount Rutledge | 335 U.S. 497 (1948) | 305 |
| December 20, 1948 | Michelson v. United States | Robert Houghwout Jackson | 335 U.S. 469 (1948) | 1808 |
| December 20, 1948 | Goesaert et al. v. Cleary et al., Members of the Liquor Control Commission of Michigan | Felix Frankfurter | 335 U.S. 464 (1948) | 298 |
| December 13, 1948 | McDonald et al. v. United States | William Orville Douglas | 335 U.S. 451 (1948) | 1736 |
| December 13, 1948 | Uveges v. Pennsylvania | Stanley Forman Reed | 335 U.S. 437 (1948) | 278 |
| December 13, 1948 | Upshaw v. United States | Hugo Lafayette Black | 335 U.S. 410 (1948) | 323 |
| December 6, 1948 | Vermilya-Brown Co., Inc. et al. v. Connell et al. | Stanley Forman Reed | 335 U.S. 377 (1948) | – |
| November 22, 1948 | Grand River Dam Authority v. Grand-Hydro | Harold Hitz Burton | 335 U.S. 359 (1948) | – |
| November 22, 1948 | United States v. Urbuteit | William Orville Douglas | 335 U.S. 355 (1948) | – |
| November 22, 1948 | Kordel v. United States | William Orville Douglas | 335 U.S. 345 (1948) | 201 |
| November 22, 1948 | Adkins, Administratrix, v. E. I. Dupont De Nemours & Co., Inc. United States, Intervenor | Hugo Lafayette Black | 335 U.S. 331 (1948) | 3220 |
| November 15, 1948 | Eckenrode, Administratrix, v. Pennsylvania Railroad Co. | Per curiam | 335 U.S. 329 (1948) | – |
| November 15, 1948 | Ford Motor Co. v. United States | Felix Frankfurter | 335 U.S. 303 (1948) | – |
| November 8, 1948 | Hoiness v. United States | William Orville Douglas | 335 U.S. 297 (1948) | – |
| November 8, 1948 | Mandel Brothers, Inc. v. Wallace | Hugo Lafayette Black | 335 U.S. 291 (1948) | – |
| October 21, 1948 | Macdougall et al. v. Green, Governor of Illinois, et al. | Per curiam | 335 U.S. 281 (1948) | 142 |