Thomas Casey may refer to:
- Thomas Casey (Kilmallock MP) (1765âÂÂ1840), Irish politician
- Thomas Lincoln Casey Sr. (1831âÂÂ1896), United States Army Corps of Engineers
- Thomas Lincoln Casey Jr. (1857âÂÂ1925), American expert in coleoptera and son of Thomas Lincoln Casey Sr.
- Thomas S. Casey (1832âÂÂ1891), American judge and politician
- Thomas Worrall Casey (1869âÂÂ1949), British Liberal Member of Parliament
- Tommy Casey (baseball), 19th-century American baseball pitcher
- Tom Casey (Australian politician) (1921âÂÂ2003), South Australian MHA and MLC
- Tom Casey (Canadian football) (1924âÂÂ2002), Canadian football player for Winnipeg Blue Bombers
- Tommy Casey (1930âÂÂ2009), Northern Irish footballer
- Tom Casey (diplomat), American diplomat