How do judges of the Supreme Court of Ohio reach the bench?

The court's current selection method is partisan election.

Supreme Court of Ohio / Joined 2013 / Active

William Michael O'Neill

Justice, Supreme Court of Ohio

William Michael O'Neill is a Justice of the Supreme Court of Ohio, serving since 2013. Opinions & record ↓ Sources ↓

Born: 1947 · age 79
Tenure: Since 2013 · 13 yrs

Judicial service

Year	Court	Appointed by	Vote
2013	Supreme Court of Ohio	–	–

Judicial Record

In our data, O'Neill authored 39 published opinions for the court (2013–2018), plus 73 dissents and 17 concurrences. Most cited: State v. McKelton (Slip Opinion) (457 citations).

Published, precedential opinions from the CourtListener corpus. Counts and rankings are objective and recomputable: how we count. We describe the record, not the judge. 129 of these were attributed to O'Neill by a unique court-, date-, and surname-match against our roster (marked ), because CourtListener recorded no author for them. Each links to the official text to verify. How we match.

Selected opinions

Year	Case	Citation	Cited
2016	State v. McKelton (Slip Opinion)· Concurrence†	2016 Ohio 5735	457
2013	State v. Darmond†	2013 Ohio 966	392
2014	State v. Kirkland (Slip Opinion)· Dissent†	2014 Ohio 1966	325
2014	Bank of Am., N.A. v. Kuchta (Slip Opinion)· Dissent†	2014 Ohio 4275	312
2016	State v. Montgomery (Slip Opinion)· Dissent†	2016 Ohio 5487	291
2015	State v. Dean (Slip Opinion)· Concurrence†	2015 Ohio 4347	243
2014	State v. Thompson (Slip Opinion)· Concurrence†	2014 Ohio 4751	240
2013	State v. Holdcroft†	2013 Ohio 5014	230
2016	State v. Richardson (Slip Opinion)· Dissent†	2016 Ohio 8448	210
2014	In Re B.C.· Dissent†	2014 Ohio 4558	193
2014	State v. Mammone (Slip Opinion)· Concurrence†	2014 Ohio 1942	186
2014	State v. Neyland (Slip Opinion)· Dissent†	2014 Ohio 1914	181
2016	State v. Obermiller (Slip Opinion)· Concurrence†	2016 Ohio 1594	165
2014	State v. Osie (Slip Opinion)· Dissent†	2014 Ohio 2966	155
2017	State v. Aalim (Slip Opinion)· Dissent†	2017 Ohio 2956	154

Showing the 15 most-cited of 129 authored opinions in our data. “Cited” is inbound citations across the CourtListener corpus. Case links open the ruling’s full text (CourtListener) or its page here; read the methodology and verify against the primary source.

Questions & answers

How do judges of the Supreme Court of Ohio reach the bench?: The court's current selection method is partisan election.
Which court is William Michael O'Neill on?: William Michael O'Neill is a Justice of the Supreme Court of Ohio.

Sources

Each fact on this page traces to a primary public record.

How we source & reconcile data → Data & Sources

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13 years on the Supreme Court of Ohio. Data as of 2026-03-31. Informational only; verify against the primary source before relying. Not a consumer report (FCRA).