Wenner is a surname. Notable people with the surname include:
Axel Wenner-Gren (1881–1961), Swedish entrepreneur, one of the richest men in the world during the 1930s
Christopher Wenner (born 1954), British journalist and former British television presenter
Jann Wenner (born 1946), the co-founder and publisher of the music and politics biweekly Rolling Stone
Kurt Wenner, artist best known for his realistic street painting and chalk murals using a projection called anamorphosis
Rosemarie Wenner (born 1955), the current Presiding Bishop of the United Methodist Church in Germany
