Mark D O'Leary

Mark D O'Leary

Litigation Lawyer
Sioux Falls, SD




No Misconduct


English , French

Answers and Advice

25 questions answered.

Practice Areas

Payments & Fees

Payment Types

Cash, Check


Hourly ($175-$500/hour)

Client Reviews

Showing 2 of 4 client reviews

Business Opportunity

Posted by: a Business client over 1 year ago.

My husband and I hired Mark O'Leary to help us make an informed decision regarding a new business investment. Mark was able to patiently explain the...

Great Attorney

Posted by: Bill over 1 year ago.

Mark O'Leary has represented me for several years. First class gentleman and very smart Attorney. Mark's input will help you make solid legal...
Show more


Showing 1 of 1 peer endorsement

John M O'Brien
John O'Brien

Sacramento, CA

9 months ago

Relationship: Fellow lawyer in community

I endorse this lawyer. An extremely talented and well respected attorney in the legal community.
Show more



1986 License Status: Authorized to practice for the state of Minnesota.
Last updated by Avvo: 12/06/2014
We have not found any instances of professional misconduct for this lawyer.

Work Experience

Showing 1 of 3 job entries
1991 – present

O'Leary Law Office


Showing 1 of 1 degree

1986 JD - Juris Doctor in Law

William Mitchell College of Law


Showing 1 of 5 association entries

2005- present Member

Defense Research Institute

Show more