The Sweeney Clock is a 1908 clock installed near Houston's Tranquillity Park, in the U.S. state of Texas. The clock was originally installed outside the J.J. Sweeney & Co. jewellery store at the northeast corner of the intersection of Main Street and Prairie Street from 1908 to 1928. The clock was originally purchased from Boston clockmaker E. Howard & Co. and was also used as a hitching post for horse-drawn carriages.