Charles Adrian Dinsmore (July 23, 1903 – December 5, 1982) was a Canadian professional ice hockey player who played 100 games in the National Hockey League. Born in Toronto, Ontario, he played for the Montreal Maroons. He won the Stanley Cup in 1926.
He played junior hockey with Toronto Aura Lee from 1919 to 1923 and then joined their senior team in 1923-24. He was signed as a free agent by the expansion Montreal Maroons in 1924 and helped them win a Stanley Cup in 1925-26.
He left the game in 1928 to take a job as a bond trader and coach of an amateur team in Montreal. But in the middle of the 1929-30 NHL season, he asked the Maroons about getting his old job back because he said the stock market didn't offer the same thrills as playing in the NHL. Probably the 1929 Stock Market Crash had something to do with his decision.
Montreal team officials told him that they had no more money in the budget to sign another player, but Dinsmore was insistent and struck a deal by signing a contract to play for the Maroons which would pay him one dollar for the remaining 9 games. He retired for good at the end of that season.