Samuel Chifney Jr. (born 1786) was an English jockey. He was the younger son of a prominent 18th century jockey, also called Samuel Chifney. In terms of talent, he reportedly outshone all his peers, but "he owned a self-destruct button and had a fatal tendency to press it". This failing meant "his talent was not converted into the kind of concrete achievement that stands the test of time". He stood at 5 feet 6 inches tall and struggled with weight. He was too lazy to waste, which it is reported he thought "akin to Chinese water torture". He was once referred to as "the long, thin, lazy lad".