Dennis Amos Marshall Maxwell[1] (9 August 1985 – 23 June 2011) was a Costa Rica international footballer who played as a left back.

[4] Marshall made his debut for Costa Rica in a June 2009 FIFA World Cup qualification match against Trinidad and Tobago.

The match saw Marshall scoring his sole goal for Costa Rica, which he dedicated to his fiancée, who died with him in the accident.

[10] Marshall had scored the only goal for Costa Rica five days earlier in a match against Honduras in the quarterfinals of the 2011 CONCACAF Gold Cup.

The president of Costa Rica, Laura Chinchilla, went on national television and expressed her sympathy and a memorial ceremony was held in Estadio Eladio Rosabal Cordero, the stadium of Marshall's former club, CS Herediano.