| Kingsley Whiffen | |
| Fullname: | Stuart Kingsley Gears Whiffen |
| Birth Date: | 3 December 1950 |
| Birth Place: | Welshpool, Wales |
| Death Place: | Dorchester, England |
| Position: | Goalkeeper |
| Youthyears1: | 1954–1966 |
| Youthclubs1: | Llanfair Caereinion |
| Years1: | 1966–1967 |
| Clubs1: | Chelsea |
| Caps1: | 1 |
| Goals1: | 0 |
| Clubs2: | Plymouth Argyle |
| Clubs3: | Bangor City |
| Nationalteam1: | Wales Schoolboys |
Stuart Kingsley Gears Whiffen (3 December 1950 – 15 December 2006) was a Welsh amateur footballer who made one appearance in the Football League for Chelsea as a goalkeeper. He was aged 16 years and 157 days on his only Chelsea appearance, making him the club's second youngest player of all time after Ian Hamilton, who was 16 years and 138 days on his debut earlier that year.[1] Whiffen won caps for Wales at schoolboy level.[2] [3]
Whiffen went to school in Llanfair Caereinion.[4] In his later life he lived in Dorset and was a keen golfer, a competition is held in his memory.[5]