Dwayne Anthony De Rosario OOnt (born May 15, 1978) is a Canadian former professional soccer player, who played as a forward or as an attacking midfielder.

He came to prominence in the 2000s playing in Major League Soccer for the San Jose Earthquakes, Houston Dynamo, Toronto FC, New York Red Bulls and D.C. United.

[3] Internationally, De Rosario represented the Canadian national team from 1998 to 2015 where he was the country's all-time leading scorer, with 22 goals in 81 games.

The next season, when Canadian Frank Yallop was named head coach of the San Jose Earthquakes, De Rosario was one of his first acquisitions.

De Rosario had similar success in 2002, registering four goals and eight assists in 1,637 minutes, though the Quakes fell short of a repeat.

In 2003, a torn ACL hobbled De Rosario for much of the season but he still managed to make a late surge, registering four goals and three assists in only 686 minutes and helping lead the team to a second MLS Cup championship.

[9] In 2005, following Landon Donovan's departure, De Rosario moved to midfield and promptly led MLS in assists with 13, while scoring nine goals, including the 2005 MLS Goal of the Year – the only player ever to receive that honour in two consecutive years – for a powerful bending free kick in the last regular season game against the Los Angeles Galaxy.

[8] Due to San Jose's failure to reach a stadium agreement with AEG, De Rosario, along with the rest of his Earthquakes teammates, moved to Houston for the 2006 season.

[19] De Rosario again found the back of the net on April 25 in a 2–0 home win against Seattle Sounders FC, scoring the first goal, his fifth of the season.

[22] De Rosario continued to have a successful 2010 season for Toronto, culminating in a spot on the MLS All-Star team, scoring a goal in the 5–2 loss to Manchester United.

Motagua in the second leg of Toronto FC's CONCACAF Champions League preliminary round tie, which at the time, put TFC ahead on 2–1 on aggregate.

[24] On December 28, De Rosario was confirmed to be on trial with Scottish Premier League club Celtic by manager Neil Lennon.

[25] Dwayne and Celtic inquired about the possibility of a short-term loan deal until the MLS season kicked off in March, however new Toronto FC coach Aron Winter and the league denied any further negotiations.

[26] De Rosario scored the first Toronto goal of the 2011 season on March 19 in a 4–2 away defeat to Vancouver Whitecaps FC in what was the league's first all Canadian match up.

[27] New York Red Bulls acquired De Rosario on April 1, 2011, in exchange for midfielder Tony Tchani, defender Danleigh Borman and a first round 2012 MLS SuperDraft pick.

[33] After having his option declined by D.C. United, De Rosario returned to Toronto FC on December 18, 2013, after being chosen in the 2013 MLS Re-Entry Draft.

De Rosario was picked for his first CONCACAF Gold Cup in four years, after being selected by coach Stephen Hart in late May 2011 for the 23-man tournament roster.

[40] On December 14, De Rosario was awarded 2011 Canadian Player of the Year receiving 47.7% of the vote, Simeon Jackson in second and Josh Simpson finishing in third.

[43] De Rosario was the country's all-time leading male goalscorer, with 22 international goals in 81 matches,[44][45] until Cyle Larin surpassed his record in 2022.