Deanna Sinclair

Family Law Attorney


Deanna Sinclair is an experienced family law attorney and dedicated advocate for her clients. Committed to providing highly personalized legal services, Ms. Sinclair is well versed in traditional and nontraditional family law matters including complex property divorces, custody litigation, premarital and postmarital agreements, enforcement proceedings, modifications, protective and restraining orders, adoption and termination proceedings, and paternity matters.

Over the last decade, Ms. Sinclair has practiced criminal and civil law in Oklahoma, Texas, and Colorado. Additionally, as a former prosecutor, her experience includes extensive litigation, bench and jury trials, and appeals. Prior to joining Feldmann Nagel Cantafio PLLC, Ms. Sinclair was a sole practitioner in Denver where she practiced primarily in fertility and Assisted Reproductive Technology law.

As a mother of twins and an experienced litigator, Ms. Sinclair offers a unique perspective. She understands the importance of family law matters and how this area of law will affect your family's future.

In her free time, Ms. Sinclair enjoys spending time in the mountains hiking and skiing with her family. She is also an avid painter and her artwork has been featured in a local art gallery.

Professional Associations and Memberships

  • Colorado Bar Association
  • American Bar Association - Family & Assisted Reproductive Technology Law Section


  • Colorado
  • Texas (Inactive)
  • Oklahoma (Inactive)


  • B.B.A. Marketing, University of Oklahoma, 2006
  • Juris Doctor, University of Tulsa, 2009