darwin hindman (april 30, 1933 – june 17, 2019) was an american politician and lawyer. he was the longest-serving mayor of columbia, missouri, totalling 15 years. he became mayor in 1995 and finished his fifth elected term in 2010, after deciding not to run for re-election. in 2009, he received the leadership for healthy communities award along with mayors michael bloomberg (new york city) and gavin newsom (san francisco).