Rollie Halvorsen, of Sheridan, WY passed away on January 13, 2026 at home surrounded by his family. He was born in Britton, SD on September 20th, 1940 to Richard and Edwedge Halvorsen. He was one of four siblings. Rollie attended school from elementary through high school in Belle Fourche, SD before receiving and graduating with his Bachelor of Science degree at Black Hills State.

He married the love of his life, Mary Douglas (of Upton, WY) on May 6, 1960, and they were married 65 wonderful years. They together had two sons. Kevin (Ruthie) Halvorsen of Glenrock, WY and Kipp (Shawna) Halvorsen of Three Forks, MT. They were blessed with fifteen grandchildren and fourteen great-grandchildren.

Rollie had a passion for teaching which led him to a career in education. He taught science and PE and coached all types of sports for the Jr High & High Schools in Lemmon SD, Hulett, WY, Globe, AZ and Sheridan, WY for over 35 years, where he loved to challenge and educate the next generation. He also coached the American Legion Baseball team for a summer in Lemmon, SD. He was an avid outdoors man and had a deep love of fishing and hunting. After retiring he stayed active playing golf as a member of the Powder Horn. He also took up pickle ball and loved to wood carve.

Rollie is preceded in death by his parents and two of his siblings.

A Rosary will be held Friday, January 23, 2026 at 6:00 pm at Holy Name Catholic Church, with Mass being held on Saturday, January 24, 2026 at 11:00 am. A Reception to follow Mass at the Knights Of Columbus Hall. Burial will take place in Upton, WY at a later date.

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Champion Kane Funeral Home has been entrusted with local arrangements.

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