Manuel C. Téllez Acosta (16 February 1885 – 25 May 1937) was a Mexican politician and diplomat who served as Secretary of the Interior (1931–1932), Secretary of Foreign Affairs (1932–1934), Ambassador of Mexico to the United States (1925–1931),[4][1] and plenipotentiary diplomatic envoy to Italy and Hungary (1934–1935).

[3] After joining the foreign service, he was appointed Chargé d'affaires of Mexico to the United States on 3 September 1923 by President Álvaro Obregón.

[1] Except for two months (from 15 April to 22 June 1924), Téllez served in the same post until he was promoted to ambassador by President Plutarco Elías Calles.

He signed the treaty of the General Claims Convention as ambassador,[6] also the Dean of the Diplomatic Corps since August 1930,[7] and served until 9 November 1931,[1] when he resigned to join the cabinet of President Pascual Ortiz Rubio as secretary of the Interior.

[5] A few decades later, one of his grandsons, Luis Téllez, served as secretary of Energy in the cabinet of President Ernesto Zedillo and as secretary of Communications and Transportation in the cabinet of President Felipe Calderón.