Thomas Mellish (1773 – 29 July 1837 in Uxbridge, Middlesex) was an English amateur cricketer who made 52 known appearances in first-class cricket matches between 1791 and 1815. He was an early member of Marylebone Cricket Club (MCC) whose teams he most often represented. He was an occasional patron of cricket, his own T Mellish's XI being active in a number of matches between 1801 and 1807.