James “Jim” Dennis

James “Jim” Dennis obituary, Mustang, OK

James “Jim” Dennis

James Dennis Obituary

Obituary published on Legacy.com by McNeil's Funeral Service on Jan. 21, 2026.
James "Jim" Dennis, of Tuttle, Oklahoma, was born May 4, 1940, and passed away surrounded by the love of his family. He was the son of William Adolph and Anna Leora Dennis.

Jim graduated from Capitol Hill High School in 1958 and began working for Western Electric as an electronics technician. While working full-time, he earned his associate degree from Oklahoma City University and later graduated from the University of Central Oklahoma with a degree in Business Administration. In 1963, he worked for the U.S. Forestry Service fighting forest fires in California. He later spent 30 years with the Federal Aviation Administration, retiring early at age 54.

Jim married the love of his life, Jean, in 1967, and they shared 58 years of marriage. In 1971, he purchased land in Tuttle and spent years designing and building the country home of his dreams, where he planted trees, built fencing, installed a pond, and raised cattle.

Known as a natural problem-solver, Jim could fix nearly anything. He enjoyed riding motor bikes, spending summers in Colorado-where he later owned a cabin-and watching wildlife from his dining room window. He had a special love for Blue Heeler dogs, especially his faithful companion, Lucy.

Jim accepted Jesus Christ as his Savior and was a devoted member of Crossings Community Church. He is survived by his wife, Jean; his daughter and son-in-law, Paula and David Koelsch; his son, Greg Dennis; his grandchildren, Brielle and her husband Parker Smith, Drake and Bryce Koelsch, and J.R. and Anna Dennis; and his sister, Betty Ann Staley, and brother, Robert Dennis.

Jim will be remembered for his quiet strength, strong work ethic, deep love for family, and the legacy he built with his own hands.

In lieu of flowers please donate to:

The Shepherds of Love Ministries

1620 Whispering Creek Court,

Edmond, Oklahoma 73013

To plant trees in memory, please visit the Sympathy Store.

Sign James Dennis's Guest Book

Not sure what to say?

January 30, 2026

John & Paulette Bird posted to the memorial.

January 25, 2026

Teresa Rountree posted to the memorial.

January 21, 2026

Vivla Ray Russell Hill posted to the memorial.

3 Entries

Group of 10 Memorial Trees

John & Paulette Bird

Sent Sympathy Gifts including Trees

Teresa Rountree

January 25, 2026

My heart is so thankful for Jim´s love for helping the needy families in our community.
I wish I could thank him personally for supporting Shepherds of Love Ministries for many years. Our prayers are with the family and friends. Teresa Rountree, Founder

Vivla Ray Russell Hill

January 21, 2026

From Vivla Ray Russell Hill
Jim was one of a kind, a special and much beloved man. We are fortunate that he came into so many lives and left us with blessings.'
Rest easy, Jim, and may God grant you eternal rest and continued service.

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McNeil's Funeral Service

525 West Highway 152 PO Box 1616, Mustang, OK 73064

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Sign James Dennis's Guest Book

Not sure what to say?

January 30, 2026

John & Paulette Bird posted to the memorial.

January 25, 2026

Teresa Rountree posted to the memorial.

January 21, 2026

Vivla Ray Russell Hill posted to the memorial.