The theft is believed to have taken place between November 10-17 and has been reported to Surrey Police.
Club member Peter Williams said: “The clock has been in place since the 1960s as a tribute to a former club captain and is much valued by river users and walkers as a visible timepiece and landmark. It is quirky and might re-appear in the trade.”
Club president Malcolm Knight added: “As with many items it isn’t of any great monetary value but it is most certainly of sentimental value to the club and is part of our 100-year history.”
Dittons Skiff and Punting Club is situated above Teddington Lock and was founded in 1923.
Anyone with information about the stolen clock should call the police on 101 quoting the Surrey police crime reference number 45190124002.