Sir Alexander Charles Ramsay-Gibson-Maitland, 3rd baronet (7 January 1820 – 16 May 1876) was a Scottish Liberal politician who sat in the House of Commons from 1868 to 1874.
Ramsay-Gibson-Maitland was born Maitland-Gibson, the son of Alexander Maitland-Gibson of Clifton Hall, Midlothian. He was educated at Edinburgh Academy and at Weimer College and became a lieutenant in the 79th Highlanders. He succeeded his grandfather, the 2nd baronet in the baronetcy in 1848. In 1866 he assumed the surname of Ramsay before that of Gibson, when he succeeded to the estates of Ramsay of Barnton. He was a Deputy Lieutenant and J.P. for Edinburgh and Stirlingshire, a colonel of the Stirlingshire Militia and captain in the Midlothian Yeomanry Cavalry.
At the 1868 general election Ramsay-Gibson-Maitland was elected Member of Parliament for Midlothian. He held the seat until 1874.
Ramsay-Gibson-Maitland married Thomasina Agnes Hunt, daughter of James Hunt of Pittencrieff in 1841.
Ramsay-Gibson-Maitland died at the age of 56. He is buried in the Grange Cemetery in Edinburgh against the north wall, towards the west entrance.