Reverend Thomas Kingsmill Abbott (26 March 1829 – 18 December 1913) was an Irish scholar and educator.

He was elected a scholar in 1848, graduated in 1851 as a senior moderator in mathematics and was made a fellow of the college in 1854.

[3][4] In 1887 he was elected librarian in Trinity and, in 1900, completed catalogues of the library's manuscript holdings.

He was one of a group of Irish scholars, including J. P. Mahaffy, who made significant contributions to the dissemination and study of the works of Immanuel Kant.

His translation of Kant's Critique of Practical Reason remained the standard English version of the text well into the 20th century.