| Honorific-Prefix: | The Hon. |
| George Barnard Baker | |
| Term Start: | January 7, 1896 |
| Term End: | February 9, 1910 |
| Birth Date: | 29 January 1834 |
| Birth Place: | Dunham, Lower Canada |
| Office: | Senator for Bedford, Quebec |
| Predecessor: | Gardner Green Stevens |
| Successor: | Rufus Henry Pope |
| Appointed: | Mackenzie Bowell |
| Constituency Mp2: | Missisquoi |
| Parliament2: | Canadian |
| Predecessor2: | Brown Chamberlin |
| Successor2: | William Donahue |
| Term Start2: | 1870 |
| Term End2: | 1887 |
| Predecessor3: | William Donahue |
| Successor3: | George Clayes |
| Term Start3: | 1891 |
| Term End3: | 1896 |
| Office4: | MLA for Missisquoi |
| Predecessor4: | Josiah Sandford Brigham |
| Successor4: | Ernest Racicot |
| Term Start4: | 1875 |
| Term End4: | 1878 |
| Cabinet: | Solicitor General (1876–1878) |
| Children: | George Harold Baker |
George Barnard Baker (January 29, 1834 – February 9, 1910) was a Quebec lawyer and political figure. He was a Liberal-Conservative member of the House of Commons of Canada representing Missisquoi from 1870 to 1874, from 1879 to 1887 and from 1891 to 1896 and in the Legislative Assembly of Quebec from 1875 to 1878. He was named to the Senate of Canada for Bedford division in 1896 and served until his death in 1910.
He was born in Dunham, Lower Canada in 1834, the son of William Baker, and studied at Bishop's College. He articled with James O'Halloran, was called to the bar in 1860 and entered practice at Sweetsburg with O'Halloran. In 1860, he married Jane Percival Cowan. Baker was elected to the House of Commons in an 1870 by-election after Brown Chamberlin resigned his seat. He served as minister without portfolio and then solicitor general in the Quebec cabinet. He was named a Queen's Counsel in 1876.
He died in Montreal in 1910.
His son George Harold was also a member of the House of Commons.