Marco is the Italian and Spanish form of Mark, from the Latin Marcus, a name derived from Mars, the Roman god of war, and usually explained as "of Mars" or "warlike". The Venetian traveler Marco Polo made the name known around the world, and Saint Mark is the patron of Venice. Marco ranked number 181 in the United States in 2000, peaked at number 179 the following year and has settled at number 370 in 2025.