Andrew Trew Wood (26 August 1826 – 21 January 1903) was a Canadian businessman and parliamentarian.

Born in Mountnorris, County Armagh, Ireland, the son of David Wood, a merchant, and Frances Bigham Trew, he emigrated to Canada sometime before 1846.

He found employment at James Shepard Ryan's hardware store in Toronto in that year; in 1848, he was put in charge of the branch in Hamilton.

A Liberal, he served three terms as a member of parliament in the House of Commons of Canada.

On 21 January 1901, he was appointed to the Senate of Canada upon the recommendation of Sir Wilfrid Laurier.