Robert Weber

• Robert R. Weber, American politician

Cartoonists

• Bob Weber (cartoonist), creator of the comic strip Moose and Molly
• Robert Weber (cartoonist), New Yorker cartoonist
• Bob Weber, Jr., cartoonist and creator of the comic strip ''Slylock Fox''

Scientists and academics

• Robert Weber (astronomer), American astronomer
• Robert Weber (engineer), American engineer and academic
• Robert J. Weber, American academic and educator

Sportspeople

• Bob Weber (American football), American gridiron football player and coach
• Robert Weber (handballer), Austrian handball player