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Richard DonTigny (1931-2023) was a physical therapist from Montana who practiced for much of his career in Havre. He was born in Havre, Montana on August 9, 1931 to Emil and Helen (Halverson) DonTigny. He graduated from Havre High School in 1949, attended Northern Montana College from 1949-1952 and received a BS in Applied Science from Montana State University in 1954. He received a certificate in physical therapy from the University of Iowa in 1958.

DonTigny served in the army in the 15th Medical Detachment to the 8th Engineer Battalion (C) in the 1st Calvary Division from 1954-1956. After completing his physical therapy certificate at the University of Iowa, he worked as a phyiscal therapist in Havre hospitals for nearly twenty years and was in private practice in Havre for ten years.

Much of DonTigny's research focused on disfunction of the sacaroiliac (SI) joint. He first published an article on the topic in titled "Evaluation, manipulation and management of the anterior dysfunction of the sacaroiliac joint" in The DO in 1973 and wrote many subsequent articles on the topic. Through this research, DonTigny developed dynamic core stabilization exercises to address issues with pain in the hip and lower back.

DonTigny married Josephine Faltrino in Havre on June 15, 1957. The couple had four children: Debbie, Julie, Laura, and Richard Jr. Richard DonTigny died in Bozeman on March 15, 2023 at the age of 91.