Ruggero Settimo (19 May 1778 – 2 May 1863) was an Italian politician, diplomat, and patriotic activist from Sicily.
He was a counter-admiral of the Sicilian Fleet.
He fought alongside the British fleet in the Mediterranean Sea against the French under Napoleon Bonaparte.
He reconquered the island of Malta, and defended the city of Gaeta near Naples.
In 1811 he had to retire from the military due to health problems.
He was a member of the Sicilian government of Prince Castelnovo in 1812 as Minister of the merchant navy.
He was a member of the revolutionary junta of 1820-1821.
In 1848 as president of the Sicilian Senate, he was appointed as chief of the government of the Kingdom of Sicily; he led the Sicilian government until 1849.
After unification in 1861, Settimo was elected as President of the Senate of the newly created Parliament of the Kingdom of Italy.