Carlos Tünnerman Bernheim (10 May 1933 – 27 March 2024) was a Nicaraguan lawyer, diplomat, government official and educator.

[2] A lawyer by training, Tünnerman defended Tomás Borge after the 1956 assassination of President Anastasio Somoza García.

[4] In 1977, Tünnerman was a member of the Group of Twelve establishment figures in Nicaragua who signed a letter of support for the Sandinistas, helping legitimize the movement.

[6] The signatory organizations pledged to work to develop a unified opposition to mount an electoral challenge to Daniel Ortega, following years of protest in the country.

[6] The other representatives signing the document were Jesús Tefel, Medardo Mairena, George Henriquez, Saturnino Cerrato, Luis Fley, and María Haydee Osuna.