Attorney RecordCriminal Defense · San Diego County
John O. Lanahan · Criminal Defense Attorney
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John O. Lanahan is on California’s State Bar roll, #133091, admitted in 1988; license status: active as of 22 July 2026. The address of record is in San Diego, San Diego County. Practice areas listed in the registry: Appellate Law and Criminal Defense. 35 case appearances are listed on this profile. Registry record updated 19 August 2026; license information comes from the State Bar.
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Verified against official State Bar of California records · record last updated 19 August 2026. Contact information on this page comes from the public record and is shown free, the registry never paywalls it.
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The record
| State Bar number | #133091 |
|---|---|
| License status | Active |
| Admitted | 1988 |
| Law school | Univ of Chicago |
| Firm | Law Ofc John Lanahan |
| Location | San Diego, San Diego County |
| Registry identity | Official State Bar record |
Practice areas
Practice areas are self-reported to the State Bar or added by the attorney; listing one is not a State Bar certification.
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Verified profiles & presence
Professional identity links come from public sources or this attorney. Review-site ratings belong to their named source and may cover a firm or office. CAR does not combine them into an attorney rating.
Cases of record
From published opinions naming this attorney as counsel. The attorney has not yet confirmed these records.
| Case | Appeared for | Citation | Court | Decided |
|---|---|---|---|---|
| Randall Amado v. Terri Gonzalez | Counsel for the appellant | 758 F.3d 1119 | U.S. Court of Appeals for the Ninth Circuit | 11 July 2014 |
| Randall Amado v. Terri Gonzalez | Counsel for the appellant | 734 F.3d 936 | U.S. Court of Appeals for the Ninth Circuit | 30 October 2013 |
| United States v. Maurice Smith | Counsel for the appellant | 719 F.3d 1120 | U.S. Court of Appeals for the Ninth Circuit | 26 June 2013 |
| United States v. O. Stephen Lyons | Counsel for the appellant | 454 F.3d 968 | U.S. Court of Appeals for the Ninth Circuit | 19 July 2006 |
| Emery v. Del Papa | Counsel for the appellant | 139 F. App'x 817 | U.S. Court of Appeals for the Ninth Circuit | 14 July 2005 |
| United States v. Cruz | Counsel for the appellant | 128 F. App'x 627 | U.S. Court of Appeals for the Ninth Circuit | 21 April 2005 |
| Amico v. Alameida | Counsel for the appellant | 122 F. App'x 357 | U.S. Court of Appeals for the Ninth Circuit | 11 February 2005 |
| UNITED STATES of America, Plaintiff-Appellee, v. Donald Martel WALKER, Defendant-Appellant | Counsel for the appellant | 117 F.3d 417 | U.S. Court of Appeals for the Ninth Circuit | 27 June 1997 |
| UNITED STATES of America, Plaintiff-Appellee, v. Donald Martel WALKER, Defendant-Appellant | Counsel for the appellant | 97 Cal. Daily Op. Serv. 5113 | California Supreme Court | 27 June 1997 |
| United States v. Noriega-Sarabia | Counsel for the appellant | 97 Cal. Daily Op. Serv. 4861 | California Supreme Court | 24 June 1997 |
| United States v. Noriega-Sarabia | Counsel for the appellant | 116 F.3d 417 | U.S. Court of Appeals for the Ninth Circuit | 24 June 1997 |
| UNITED STATES of America, Plaintiff-Appellee, v. Mario Alberto VALLEJO, Defendant-Appellant | Counsel for the appellant | 69 F.3d 992 | U.S. Court of Appeals for the Ninth Circuit | 29 January 1996 |
| United States v. Miguel Angel Rodriguez | Counsel for the appellant | 95 Cal. Daily Op. Serv. 323 | California Supreme Court | 12 January 1995 |
| United States v. Miguel Angel Rodriguez | Counsel for the appellant | 45 F.3d 302 | U.S. Court of Appeals for the Ninth Circuit | 12 January 1995 |
| United States v. Arturo Lopez-Vasquez | Counsel for the appellant | 1 F.3d 751 | U.S. Court of Appeals for the Ninth Circuit | 10 August 1993 |
| United States v. Arturo Lopez-Vasquez | Counsel for the appellant | 985 F.2d 1017 | U.S. Court of Appeals for the Ninth Circuit | 8 February 1993 |
| United States v. Arturo Lopez-Vasquez | Counsel for the appellant | 93 Cal. Daily Op. Serv. 950 | California Supreme Court | 8 February 1993 |
| United States v. Rodolfo Espinoza Abarca, United States of America v. Espinoza Rodolfo Abarca | Counsel for the appellant | 93 Cal. Daily Op. Serv. 915 | California Supreme Court | 5 February 1993 |
| United States v. Rodolfo Espinoza Abarca, United States of America v. Espinoza Rodolfo Abarca | Counsel for the appellant | 985 F.2d 1012 | U.S. Court of Appeals for the Ninth Circuit | 5 February 1993 |
| United States v. Edwin Morales | Counsel for the appellant | 972 F.2d 1007 | U.S. Court of Appeals for the Ninth Circuit | 25 November 1992 |
| United States v. Larry Wayne Lafleur, United States of America v. Nick Michael Holm | Counsel for the appellant | 971 F.2d 200 | U.S. Court of Appeals for the Ninth Circuit | 4 August 1992 |
| United States v. Larry Wayne Lafleur, United States of America v. Nick Michael Holm | Counsel for the appellant | 92 Cal. Daily Op. Serv. 6775 | California Supreme Court | 4 August 1992 |
| United States v. Stanley Frank Barski | Counsel for the appellant | 92 Cal. Daily Op. Serv. 5862 | California Supreme Court | 1 July 1992 |
| United States v. Stanley Frank Barski | Counsel for the appellant | 968 F.2d 936 | U.S. Court of Appeals for the Ninth Circuit | 1 July 1992 |
| United States v. Edwin Morales | Counsel for the appellant | 961 F.2d 1428 | U.S. Court of Appeals for the Ninth Circuit | 17 April 1992 |
| United States v. Larry Wayne Lafleur, United States of America v. Nick Michael Holm | Counsel for the appellant | 952 F.2d 1537 | U.S. Court of Appeals for the Ninth Circuit | 16 December 1991 |
| United States v. Felipe Beltran-Felix | Counsel for the appellant | 934 F.2d 1075 | U.S. Court of Appeals for the Ninth Circuit | 28 May 1991 |
| United States v. Felipe Beltran-Felix | Counsel for the appellant | 91 Cal. Daily Op. Serv. 3781 | California Supreme Court | 28 May 1991 |
| United States v. Travis Lawrence Page | Counsel for the appellant | 922 F.2d 534 | U.S. Court of Appeals for the Ninth Circuit | 2 January 1991 |
| United States v. Travis Lawrence Page | Counsel for the appellant | 91 Cal. Daily Op. Serv. 126 | California Supreme Court | 2 January 1991 |
| United States v. Craig Randolph Pearson | Counsel for the appellant | 911 F.2d 186 | U.S. Court of Appeals for the Ninth Circuit | 13 August 1990 |
| United States v. Rigoberto Santana | Counsel for the appellant | 908 F.2d 506 | U.S. Court of Appeals for the Ninth Circuit | 13 July 1990 |
| United States v. Craig Randolph Pearson | Counsel for the appellant | 900 F.2d 1357 | U.S. Court of Appeals for the Ninth Circuit | 6 April 1990 |
| United States v. Jose Jesus Lira-Barraza, Civ. A. No. 88-5161 | Counsel for the appellant | 897 F.2d 981 | U.S. Court of Appeals for the Ninth Circuit | 28 February 1990 |
| United States v. Gustavo Larios Cortes | Counsel for the appellant | 895 F.2d 1245 | U.S. Court of Appeals for the Ninth Circuit | 8 February 1990 |
Appearances in published opinions, drawn from public court records. Cases of record are matters of public record and are not a representation of results; past results do not guarantee a similar outcome. Legal information, not legal advice.
Each case name opens the published opinion it comes from. Is a case not this attorney’s? The attorney can claim this profile and mark it as not theirs, which removes it from this page; anyone can report an error through Help & Support.
On the official record
The employer on the official record is Law Ofc John Lanahan.
The law school on the record is University of Chicago.
Admitted to the California Bar in 1988 · 38 years on the roll.
Practice areas on the record: Appellate Law and Criminal Defense.
35 appearances as counsel in published opinions are on this record.
The address of record is in San Diego, in San Diego County, where matters are ordinarily heard at the Superior Court of California, County of San Diego, seated at San Diego.
Confirm John O. Lanahan’s license status, bar number #133091, and official disciplinary or administrative history directly with the State Bar of California at apps.calbar.ca.gov before retaining counsel. This profile does not reproduce the complete official history; missing information does not mean no discipline. This page indexes public-record data and identifies verified claims; it does not rate attorney quality or predict results.
Legal information, not legal advice.
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