License & bar number lookup
Delaware Attorney License Lookup
Search 5,061 attorneys registered with the Delaware Supreme Court — Clerk's Office attorney registration (mandatory annual registration, Del. Sup. Ct. Rule 69) by name or bar number. Every record shows the official license status and as-of date.
How to verify a Delaware attorney
- Search the attorney by name or bar number in the search box above — it pulls the official Delaware Supreme Court — Clerk's Office attorney registration (mandatory annual registration, Del. Sup. Ct. Rule 69) record.
- Confirm the license status reads "active" (not suspended, disbarred, inactive, or not eligible).
- Check the disciplinary standing — disbarred or suspended is a public record you can see before you hire.
- Cross-check the bar number and admission year against anything the attorney told you.
Delaware attorneys — last name “O”
Active Delaware attorneys with last names starting “O.” Use the search box above for an exact name or bar number.
Charles M Oberly, III
Wilmington
- Bar #
- 000743
- Admitted
- 1971 · 55 yrs
- Firm
- Delaware Department of Justice
Mark D Olson
Wilmington
- Bar #
- 000322
- Admitted
- 1976 · 50 yrs
- Firm
- Morris James LLP
James W Owen, Sr
Wilmington
- Bar #
- 001054
- Admitted
- 1980 · 46 yrs
- Firm
- James W. Owen, Pa
Kevin A O'Brien
Wilmington
- Bar #
- 001082
- Admitted
- 1981 · 45 yrs
- Firm
- Law Office of Kevin A. O'Brien
Kevin J O'Connell
Wilmington
- Bar #
- 002326
- Admitted
- 1984 · 42 yrs
- Firm
- Office of Defense Services - Ncc
Robert J O'Neill, Jr
Phila
- Bar #
- 002620
- Admitted
- 1987 · 39 yrs
- Firm
- Reger Rizzo & Darnall LLP
Susan C Over
Wilmington
- Bar #
- 002674
- Admitted
- 1988 · 38 yrs
- Firm
- Gonser and Gonser P.a.
O'Brien Robert P O'Flynn
Hockessin
- Bar #
- 002902
- Admitted
- 1990 · 36 yrs
Gerard M O'Rourke
Wilmington
- Bar #
- 003265
- Admitted
- 1994 · 32 yrs
- Firm
- O'Kelly & O'Rourke, LLC
Matthew J O'Toole
Wilmington
- Bar #
- 003232
- Admitted
- 1994 · 32 yrs
- Firm
- Potter Anderson & Corroon LLP
Lisa Borin B Ogden
Rehoboth Beach
- Bar #
- 003275
- Admitted
- 1994 · 32 yrs
- Firm
- City of Rehoboth Beach
Andrew T O'Neill
Wilmington
- Bar #
- 003367
- Admitted
- 1995 · 31 yrs
- Firm
- Delaware Department of Justice
Daniel P O'Brien
Wilmington
- Bar #
- 003527
- Admitted
- 1996 · 30 yrs
- Firm
- Pierson Ferdinand LLP
William F O'Brien
Dover
- Bar #
- 003628
- Admitted
- 1997 · 29 yrs
- Firm
- Chesapeake Utilities Corporation
James M Olsen
Fairfax
- Bar #
- 003763
- Admitted
- 1998 · 28 yrs
- Firm
- Harrity & Harrity, LLP
Christine P O'Connor
Wilmington
- Bar #
- 003858
- Admitted
- 1999 · 27 yrs
- Firm
- Tybout Redfearn & Pell
James E Oneill
Wilmington
- Bar #
- 004042
- Admitted
- 2001 · 25 yrs
- Firm
- Pachulski Stang Ziehl & Jones LLP
Mark D Olivere
Wilmington
- Bar #
- 004291
- Admitted
- 2002 · 24 yrs
- Firm
- Chipman Brown Cicero & Cole, LLP
(piatt) Stephanie E O'Byrne
Wilmington
- Bar #
- 004446
- Admitted
- 2003 · 23 yrs
- Firm
- Dla Piper LLP (us)
Matthew E O'Byrne
Wilmington
- Bar #
- 004441
- Admitted
- 2003 · 23 yrs
- Firm
- Casarino Christman Shalk Ransom & Doss, P.a.
Alyssa S O'Connell
Wilmington
- Bar #
- 004351
- Admitted
- 2003 · 23 yrs
- Firm
- Young Conaway Stargatt & Taylor, LLP
Sean T O'Kelly
Wilmington
- Bar #
- 004349
- Admitted
- 2003 · 23 yrs
- Firm
- O'Kelly & O'Rourke, LLC
Jonathan B O'Neill
Newark
- Bar #
- 004442
- Admitted
- 2003 · 23 yrs
- Firm
- Kimmel, Carter, Roman, Peltz & O'Neill,p.a.
Mark R Owens
Indianapolis
- Bar #
- 004364
- Admitted
- 2003 · 23 yrs
- Firm
- Barnes & Thornburg LLP
Shannon R Owens
Georgetown
- Bar #
- 004443
- Admitted
- 2003 · 23 yrs
- Firm
- Sergovic Carmean Weidman McCartney & Owens, P.a.
K. Tyler O'Connell
Wilmington
- Bar #
- 004514
- Admitted
- 2004 · 22 yrs
- Firm
- Morris James LLP
Charles P O'Brien
Wilmington
- Bar #
- 004896
- Admitted
- 2006 · 20 yrs
- Firm
- Gordon Fournaris & Mammarella, P.a.
Daniel A O'Brien
Wilmington
- Bar #
- 004897
- Admitted
- 2006 · 20 yrs
- Firm
- Venable LLP
Penelope B O'Connell
Wilmington
- Bar #
- 004898
- Admitted
- 2006 · 20 yrs
- Firm
- Office of Defense Services - Ncc
Jennifer D Oliva
Bloomington
- Bar #
- 005046
- Admitted
- 2007 · 19 yrs
- Firm
- Indiana University Maurer School of Law
Robert M Oakes
Wilmington
- Bar #
- 005217
- Admitted
- 2008 · 18 yrs
- Firm
- Fish & Richardson P.c.
Mahler Lauren M O'Connell
Wilmington
- Bar #
- 005519
- Admitted
- 2010 · 16 yrs
- Firm
- Office of Defense Services - Ncc
Adam V Orlacchio
Wilmington
- Bar #
- 005520
- Admitted
- 2010 · 16 yrs
- Firm
- Blank Rome LLP
Michael G Owen
Wilmington
- Bar #
- 005521
- Admitted
- 2010 · 16 yrs
- Firm
- Morris James LLP
Candice H Osnato
New York
- Bar #
- 005555
- Admitted
- 2011 · 15 yrs
- Firm
- Kpmg, LLP
Walter J O'Brien
New Castle
- Bar #
- 005942
- Admitted
- 2013 · 13 yrs
- Firm
- Weber Gallagher Simpson Stapleton Fires & Newby
Paul A O'Brien, III
Greenville
- Bar #
- 006064
- Admitted
- 2014 · 12 yrs
- Firm
- Law Office of Kevin O'Brien
Julie M O'Dell
Wilmington
- Bar #
- 006191
- Admitted
- 2015 · 11 yrs
- Firm
- Smith, Katzenstein & Jenkins LLP
Brian E O'Neill
Wilmington
- Bar #
- 006315
- Admitted
- 2016 · 10 yrs
- Firm
- Clark Hill
John M O'Toole
Wilmington
- Bar #
- 006448
- Admitted
- 2017 · 9 yrs
- Firm
- Richards Layton & Finger Pa
Abolore J Oshodi
Wilmington
- Bar #
- 006447
- Admitted
- 2017 · 9 yrs
- Firm
- Delaware Department of Justice
Gwendolyn M Osborn-Gustavson
Dover
- Bar #
- 006570
- Admitted
- 2018 · 8 yrs
- Firm
- Schwartz & Schwartz Attorneys At Law
Mae Oberste
Wilmington
- Bar #
- 006690
- Admitted
- 2019 · 7 yrs
- Firm
- Bernstein Litowitz Berger & Grossmann LLP
Peter Orourke
Garnet Valley
- Bar #
- 006740
- Admitted
- 2020 · 6 yrs
- Firm
- Oracle America, Inc.
Lawrence J O'Brien
Wilmington
- Bar #
- 007000
- Admitted
- 2022 · 4 yrs
- Firm
- McCarter & English, LLP
Lauren R Otto
New Castle
- Bar #
- 006887
- Admitted
- 2022 · 4 yrs
- Firm
- Tarabicos Grosso, LLP
Jaevan C Owens
Wilmington
- Bar #
- 006888
- Admitted
- 2022 · 4 yrs
- Firm
- Ferry Joseph, P.a.
O'Brien Clara A O'Flynn
Georgetown
- Bar #
- 007245
- Admitted
- 2023 · 3 yrs
- Firm
- The Bickel Firm LLC
Oluwadamilola E Omotunde
Wilmington
- Bar #
- 007246
- Admitted
- 2023 · 3 yrs
- Firm
- Faegre Drinker Biddle & Reath LLP
Nkemakunam L Obata
Wilmington
- Bar #
- 007439
- Admitted
- 2024 · 2 yrs
- Firm
- Margolis Edelstein
Christopher A Ouellette
Philadelphia
- Bar #
- 007440
- Admitted
- 2024 · 2 yrs
- Firm
- Cohen Seglias Pallas Greenhall & Furman P.c.
Marguerite A O'Brien
Wilmington
- Bar #
- 007636
- Admitted
- 2025 · 1 yr
- Firm
- Ross Aronstam & Moritz LLP
Shane L O'Connor
Wilmington
- Bar #
- 007637
- Admitted
- 2025 · 1 yr
- Firm
- Morris, Nichols, Arsht & Tunnell LLP
Brady C O'Neill
Wilmington
- Bar #
- 007638
- Admitted
- 2025 · 1 yr
- Firm
- Superior Court of Delaware
Brianna Odonnell
Newark
- Bar #
- 007520
- Admitted
- 2025 · 1 yr
- Firm
- Franklin & Prokopik
Anneliese Ostrom
Wilmington
- Bar #
- 007521
- Admitted
- 2025 · 1 yr
- Firm
- Morris, Nichols, Arsht & Tunnell LLP
Kaitlin O'Donnell
Wilmington
- Bar #
- 007688
- Admitted
- 2026 · 0 yrs
- Firm
- Troutman Pepper Locke
Disciplinary actions
See Delaware attorney disciplinary actions (0 attorneys currently disbarred or suspended of record).
Frequently asked questions
How do I check if a lawyer is licensed in Delaware?
Search their name or bar number in the lookup above. It returns the official Delaware Supreme Court — Clerk's Office attorney registration (mandatory annual registration, Del. Sup. Ct. Rule 69) record, including current license status and admission year. If no record comes back, the person may not be licensed in Delaware.
How many attorneys are registered in Delaware?
5,061 attorneys are registered with the Delaware Supreme Court — Clerk's Office attorney registration (mandatory annual registration, Del. Sup. Ct. Rule 69), and 4,092 are on active status. Every record here shows the official license status and as-of date.
Is Delaware attorney discipline public?
Yes. License status, including disbarment and suspension of record, is public information published by the Delaware Supreme Court — Clerk's Office attorney registration (mandatory annual registration, Del. Sup. Ct. Rule 69). 0 Delaware attorneys are currently disbarred or suspended of record.
What is a bar number?
A bar number is the unique ID the Delaware Supreme Court — Clerk's Office attorney registration (mandatory annual registration, Del. Sup. Ct. Rule 69) assigns to each admitted attorney. It is the most reliable way to confirm you are looking at the right person, especially for common names.
Does this cost anything?
No. Looking up a Delaware attorney's license and disciplinary standing on this site is free and requires no account.
Data sources & last updated
- Licensing roster & status: Delaware Supreme Court — Clerk's Office attorney registration (mandatory annual registration, Del. Sup. Ct. Rule 69). Public licensing roster.
- Resident-attorney benchmark: ABA National Lawyer Population Survey 2024.
- Data on this page as of 2026-06-14 (last roster ingest).
This site republishes official public records and is not legal advice, a lawyer referral service, or a consumer reporting agency. Information here may not be used to make decisions about employment, tenancy, or credit (FCRA). Records are shown as published by their official sources and may contain errors or be out of date; consult the linked official source to verify. To correct or dispute a record, contact the licensing authority of record.