MaryAnn "Mariana" Vielma

MaryAnn "Mariana" Vielma was appointed to the Adams County Court in July 2020. She hears criminal, misdemeanor and traffic cases. Voters retained her in 2022 with 66.97 percent of the votes cast on the question: 88,683 yes and 43,736 no.

Before her appointment she was a magistrate, an assistant county attorney, a senior deputy district attorney and a district court law clerk. She earned her undergraduate degree at the University of Texas at El Paso and her law degree at the University of St. Thomas School of Law. She has served on boards or committees of the Colorado Women's Bar Association, the Colorado Hispanic Bar Association, the Diversity on the Bench Coalition and the Colorado Commission on Judicial Discipline. The Colorado Judicial Institute gave her its Judicial Excellence Award in 2023.

The Seventeenth Judicial District Commission on Judicial Performance voted 8 to 0 that she meets performance standards, with two commissioners absent. It received too few survey responses to review them.

The commission writes that her "demeanor is respectful, professional, dignified, and fair" and that she "brings clarity and answers to confusing, and often emotional and difficult issues." It describes her written decisions as "clear, concise, and well-written" and writes that she "is an extremely hard worker and is dedicated to being the best county court judge she can be for her community."