Santiago Hernán Solari (born October 7, 1976) is an Argentinian football player, who currently plays left midfielder for Real Madrid and the Argentina national team.

Solari began his career with CA River Plate, where he played 75 games, before moving to Atletico de Madrid. Upon the club's relegation in 2000, Solari moved across the city to Real Madrid. Although he struggled with form in the his first season with his club, he established himself in the 2001/2 season, playing an important role in Real's successful UEFA Champions League campaign. Although he was relegated to primarily playing a substitute's role in 2002/3, he nevertheless helped Real win yet another Spanish League title. Although he recovered his starting position with the club in 2003/4, Real's season was disappointing, as they stumbled to a fourth place finish in Spain, and failed to win any domestic or international honors.

Before moving from River Plate to Atletico Madrid, Solari played a year of college soccer at Richard Stockton College, making him the only college soccer player to have won the UEFA Champions League.