Charles Tweedie FRSE (27 June 1868–14 September 1925) was a Scottish mathematician and mathematical historian.

He was from a large family, and his older brother, David Tweedie (b.

[1][2] He was educated at Swinton Parish School and then George Watson's College in Edinburgh.

He won the Sibbald Scholarship to study mathematics and physics at the University of Edinburgh.

His proposers were George Chrystal, Peter Guthrie Tait, Cargill Gilston Knott and John Sturgeon Mackay.