Sir Thomas Dyke Acland, 11th Baronet, FRS (25 May 1809 – 29 May 1898) was a British educational reformer and a politician who sat in the House of Commons between 1837 and 1886 initially as a Tory and later, after an eighteen-year gap, as a Liberal.

He was educated at Harrow and Christ Church, Oxford, where he was friends with William Ewart Gladstone and Lord Elgin among others.

[5]: 453  During the tensions within the Tory party in the 1840s over the Corn Laws, Acland supported Sir Robert Peel's free trade policy.

However, he later became a supporter of educational projects of a more Liberal character and played a leading role in the establishment of the Oxford local examinations system in 1858.

Acland was influential in the recruitment of Augustus Voelcker as consultant agricultural chemist to the Royal Bath and West of England Society around 1849.

The Devonshire North constituency was abolished by the Redistribution of Seats Act of 1885 and Acland was instead returned to Parliament for Wellington.