Thomas Chalmers (19 March 1850 – 25 May 1926) was a Scottish international rugby and cricket player.

He was a solid tackler, good kicker and handy dribbler (a tactic of the time).

In the event, the entire Scottish team was made up of members of the Queen's Park club.

[4] He was a cousin of the Neilson brothers, who played for Scotland and then became Presidents of the SRU (then the Scottish Football Union) and his nephew John Knox played in the 1903 Triple Crown winning rugby team.

On one occasion playing for West of Scotland against Australia in 1878 he scored 38 against the bowling of Fred Spofforth, Garrett and others.