The Tasmanian Rugby Union, or TRU, is the governing body for the sport of rugby union within the state of Tasmania in Australia. The TRU was established in 1933. It is a member and founding union of Rugby Australia.

Currently, the Tasmanian Rugby Union holds a variety of competitions for male and female players, in several age groups and divisions.

The headquarters for the Tasmanian Rugby Union are at Rugby Park, Cornelian Bay, Tasmania.

As at the end of 2019, there are 13 clubs which make up the TRU.

Ten of these clubs field senior men's sides, eight field senior women's sides, and five field junior sides. There is also a "golden oldies" club for players aged 35+.

The Tasmanian Rugby Union Referee's Association is also directly affiliated with the TRU.

Rugby Union in Tasmania consists of the following divisions: Men's Premiership (First Grade), Men's Championship (Reserve Grade), Women's, Junior Under 18, Junior Under 16, Juniors Under 14 and Tassie Devils (under 12).

The Tasmanian Rugby Union uses W RUGBY branded rugby balls across all divisions during matches.