Nicholas William Markakis (born November 17, 1983 in Glen Cove, New York) is a Major League Baseball outfielder currently with the American League's Baltimore Orioles.

Markakis was born on Long Island, New York, but he later moved to Woodstock, Georgia with his family. Nick's family includes his parents, Dennis and Mary Lou; his brother Dennis, his brother Michael, also an alumnus of Young Harris College; and his brother Greg. Markakis is half-Greek and half-German.

At Young Harris College, Markakis played as both an outfielder and a pitcher, hitting .439 with 21 home runs and 92 RBIs, while also gathering a 12–0 win–loss record as a pitcher with 1 save and a 1.68 earned run average in 15 games. Most Major League teams viewed Markakis as a pitching prospect, but the Orioles coveted his power. He spent his first year with the Aberdeen IronBirds, producing a strong batting average but little power in his swing. In August 2003, he played in the European National Championships, winning a silver medal with Team Greece. In 2004, Markakis played for the Greek Olympic baseball team in the 2004 Olympic Games in Athens, Greece.