Kroy Evan Biermann (born September 12, 1985) is an American football outside linebacker who is currently a free agent. He was drafted by the Atlanta Falcons in the fifth round of the 2008 NFL Draft. He played college football at Montana. He is married to Don't Be Tardy star Kim Zolciak.
Biermann was born in Hardin, Montana, the son of Keith and Kathy Biermann. He has two older sisters, Krista and Kelsey. His parents and immediate family all have names that start with the letter "K." Wanting to keep the tradition going and unhappy with standard names beginning with "K", Biermann's mother searched a phone book for a suitable "K" name and chose Kroy.
Biermann earned eight letters at Hardin High School (Hardin, Montana): three in football; three in wrestling; and two in track. He was a First-team All-State pick and team captain as a junior and senior at linebacker. He was chosen First-team All-Conference at running back in 2002 and 2003. He participated in Montana's Annual East-West Shrine Game. Biermann was also one of the state's premier wrestlers at the A level and placed second in the state as a junior and senior. His senior year in wrestling he was team captain, had the most take-downs and most pins, and was voted his team's Most Valuable Wrestler.