About Jeff Trevillion
Jeff Trevillion Jr. combines law and numbers in a career that bridges courtroom work and accounting. He earned a B.B.A. in Accounting and Finance from Langston University in 1999. He then completed a J.D. and an M.B.A. from the University of Oklahoma in 2007, finishing both degrees the same year.
He began his legal career soon after law school and established Trevillion & Associates, PLLC, where he served as a shareholder beginning in 2008. That venture framed his early work, pairing business and financial insight with litigation and advisory matters. In 2020 he moved into a partnership role at Doerner Saunders Daniel and Anderson, LLP. In 2022 he joined Crowe & Dunlevy, P.C. as a director, taking on leadership responsibilities in a larger firm setting.
Trevillion is admitted to practice before multiple state and federal courts. His credentials include the Supreme Court of Oklahoma and the Supreme Court of Texas, admission to the State Bar of Texas, and practice rights in the U.S. District Courts for the Northern and Western Districts of Oklahoma. He is also admitted before the U.S. Tax Court and the Tenth Circuit. He holds certification as a Certified Public Accountant from the Oklahoma Board of Accountancy, a credential that informs his work on cases involving complex financial issues.
Memberships in professional organizations run across legal and accounting lines. He is a member of the Oklahoma Bar Association, the American Bar Association, and the Federal Bar Association. He also belongs to criminal defense groups, including the Oklahoma Criminal Defense Lawyers Association and the National Association of Criminal Defense Lawyers. On the accounting side he is active in the American Institute of Certified Public Accountants and the Oklahoma Society of Certified Public Accountants. He is listed with the Oklahoma Bar Foundation, the Oklahoma City Association of Black Lawyers and the National Bar Association.
Colleagues and clients describe his practice as practical and detailed. He draws on dual training in business and law when assembling financial analyses, structuring settlements, or preparing for trial. The CPA credential allows him to work directly with financial records rather than rely solely on outside accounting experts. That can streamline preparation for tax cases and business disputes.
At Crowe & Dunlevy he participates in matters that touch on criminal defense, tax controversy, and business litigation. He has experience presenting arguments in state and federal tribunals and in tax proceedings. His work continues to intersect legal strategy and financial analysis.
He practices at Crowe & Dunlevy, P.C., where he handles matters involving criminal defense, tax disputes and business-related litigation.
