Stephen Diebel is co-owner and manager of Diebel Cattle Company, a fifth-generation cow-calf operation in Victoria County, Texas.

Born to Ronald and Barbara Diebel in Victoria, he earned a bachelor of science in animal science from Texas A&M University, College Station, in 1995.

Diebel was elected a TSCRA director in 2011. He has also served as Victoria Soil and Water Conservation District chairman, chairman of the Coastal Prairie Grazing Lands Coalition, chairman of the Texas Grazing Lands Coalition, and a member of the College of Agriculture Development Council with Texas A&M University. He is also a member of the Houston Livestock Show and Rodeo All Breeds Sale Committee and Trinity Episcopal Church, Victoria. Diebel was named Outstanding Young Farmer and Rancher of the Year by the Texas Farm Bureau in 2008.

Stephen and Jennifer Diebel have been married for 25 years and have three children, Sarah, Julie and Clayton.