Honório Hermeto Carneiro Leão, Marquis of Paraná (11 January 1801 – 3 September 1856) was a politician, diplomat, judge and monarchist of the Empire of Brazil. Paraná was born to a family of humble means in São Carlos do Jacuí, in what was then the captaincy of Minas Gerais. After attending the University of Coimbra in Portugal and having returned to Brazil, Paraná was appointed a judge in 1826 and later elevated to appellate court justice. In 1830, he was elected to represent Minas Gerais in the Chamber of Deputies; he was re-elected in 1834 and 1838, and held the post until 1841.