Transportation 18

Dennis O'Neill

November 29, 1950 ~ May 18, 2021 (age 70)


Dennis O’Neill, 70, Mandan, passed away May 18, 2021 at Sanford Health in Bismarck. 

Visitation will be held from 5 to 8 PM on Tuesday, June 8, 2021 at Buehler-Larson Funeral Home, Mandan.  Burial will be at 10 AM on Wednesday, June 9, 2021 at the North Dakota Veterans Cemetery with full military honors.

Dennis was born November 29, 1950 in Bismarck to Owen and Rosella (Kolberg) O’Neill.  He grew up in Mandan and enjoyed wrestling in high school.  He graduated from Mandan High School in 1968 and went on to attend Bismarck Junior College and Dickinson State College where he continued to wrestle.  Dennis enlisted in the United States Marine Corp, serving from January 1970 until he was honorably discharged in November 1972. 

Dennis loved his horses and riding his Harley Davidson motorcycles.  He had a passion for art and was a talented drawer.

He is survived by his brothers, Eugene (Linda) O’Neill, Mandan and Patrick (Roxane) O’Neill, Moreno Valley, CA; along with a niece, Erin (Arik) Moe, Arlington, WA; and great-nephew, Finnegan Moe.

Dennis was preceded in death by his parents.


To send flowers to Dennis' family, please visit our floral store.

 Service Program


June 8, 2021

5:00 PM to 8:00 PM
Buehler-Larson Funeral Home
1701 Sunset Drive
Mandan, ND 58554

Military Honors
June 9, 2021

10:00 AM
North Dakota Veterans Cemetery
1825 46th St
Mandan, ND 58554

Video is available for this event

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