Alexei Konstantinovich Yagudin (Russian: Алексей Константинович Ягудин (help·info); 18 March 1980) is a Russian former competitive figure skater. He is the 2002 Olympic champion, a four-time World champion (1998, 1999, 2000, 2002), a three-time European champion (1998, 1999, 2002), a two-time Grand Prix Final champion (1998–1999, 2001–2002), the 1996 World Junior champion, and a two-time World Professional champion (1998, 2002).
Yagudin is the only skater (all disciplines included) to have achieved a Golden Slam, a victory in all major championships (Olympic Games, World Championships, European Championships, Grand Prix assignments, Grand Prix Final) in the same season (2001-2002).
Alexei Yagudin was introduced to skating at age four by his mother, Zoya, who saw the activity as a way to improve his health. He learned all his double jumps before age ten, the five triple jumps before age twelve, and the triple Axel jump before he turned thirteen. His first coach was Alexander Mayorov, and then he was introduced to the famous Russian coach Alexei Mishin when Mayorov moved to Sweden in 1992. Yagudin trained in Mishin's group from 1992 to 1998. He began competing at the international level in 1994, and won the 1996 World Junior Championships. The famous rivalry with fellow Russian skater Evgeni Plushenko began when they trained in Mishin's group, and intensified after Yagudin left.