Benjamín Vicuña Mackenna (August 25, 1831 – January 25, 1886) was a Chilean writer, journalist, historian and politician.

On 4 July 1851 Vicuña Mackenna and Roberto Souper managed to escape from the prison disguised as women.

Elected national senator for a six-year term, in 1872 Benjamín Vicuña Mackenna was also appointed mayor of Santiago.

Like his contemporary Bartolomé Mitre in Argentina, Benjamín Vicuña Mackenna represented the intellectual class of the South American landed elites.

Vicuña Mackenna Park, which is located in northeastern Chile in XV Arica and Parinacota Region, is named after him.