Daniel Boyle (born July 12, 1976) is a Canadian professional ice hockey defenceman and an alternate captain of the San Jose Sharks of the National Hockey League (NHL). He has previously played for the Florida Panthers and Tampa Bay Lightning, with whom he won a Stanley Cup in 2004.
Undrafted after four years with the Miami RedHawks of the Central Collegiate Hockey Association (CCHA), Boyle was signed as a free agent by the Florida Panthers on March 30, 1998. He played his first two seasons in the Panthers' farm system in the American Hockey League (AHL), earning All-Rookie Team honours in 1999, as well as Second Team All-Star honours in 1999 and 2000. Boyle earned a full-time roster spot with the Panthers in 2000–01, recording 4 goals and 22 points. The next season, his fourth in Florida, he was traded to the Tampa Bay Lightning in exchange for a fifth round draft choice (Martin Tůma) in 2003 on January 7, 2002. After completing the season with 20 points in 41 games after coming over from the Panthers, he was re-signed to a one-year contract by the Lightning on August 6, 2002.
He recorded 13 goals and 53 points in his first full season with the Lightning in 2002–03 before helping the team to the 2004 Stanley Cup championship. Due to the 2004–05 NHL lockout, Boyle went overseas to play for Djurgårdens IF of the Elitserien. As NHL play resumed the next season, Boyle continued to produce with a 15-goal, 53-point season in 2005–06. He recorded his first career NHL hat trick against the New York Rangers on December 23, 2006, adding an assist for a four-point game in a 4–3 win. The following season, Boyle elevated his game to career-high numbers of 20 goals, 43 assists and 63 points, good enough for Second Team All-Star honours.