Thomas Austin may refer to:

• Thomas Austin (pastoralist) (1815–1871), English settler who introduced rabbits into Australia
• Thomas Austin (American football) (born 1986), former American football center
• Thomas Austin (cricketer) (1857–1941), New Zealand cricketer
• Thomas Austin (Ohio politician), American politician from Ohio
• Thomas Austin (civil servant) (1887–1976), British civil servant of the Indian civil service
• Tom Austin (politician) (1923–2002), Australian politician