Maxwell Coburn "Coby" Whitmore (1913 – 1988) was an American painter and magazine illustrator known for his Saturday Evening Post covers, and a commercial artist whose work included advertisements for Gallo Wine and other brands. He additionally became known as a race-car designer.
Jacoba ("Coby") van Baalen-Dorresteijn is an equestrian from the Netherlands, who won the silver medal in the Team Dressage event at the 2000 Summer Olympics in Sydney, Australia.
Coby Iwaasa is a Canadian racquetball player. He is the 2022 Pan American Champion in Men's Doubles (with Samuel Murray), and was a bronze medalist at the 2015 Pan American Games in Toronto.