Francisco Marinho Robby Elson (born 28 February 1976) is a Dutch former professional basketball player.

Elson was the seventh Dutch player to play in the National Basketball Association (NBA).

Elson gained notoriety during Denver's 2004 playoff series with Minnesota through his physical attempts to contain Kevin Garnett.

On 21 February 2008 Elson was traded by the San Antonio Spurs along with Brent Barry to the Sonics in exchange for Kurt Thomas.

Elson later signed a two-year, $3 million contract with the Bucks to serve as Andrew Bogut's primary backup.

On 18 February 2010 Elson was traded to the Philadelphia 76ers along with sharpshooter Jodie Meeks in exchange for Primoz Brezec and Royal Ivey.

[14] On 27 January 2012 Elson was signed by the Philadelphia 76ers to provide the team with front-court depth because of injuries at the position.

[16] In January 2013, Elson signed with Mahram Tehran of the Iranian Basketball Super League.

[20] Elson played 60 games for the Netherlands men's national basketball team, after making his debut on 5 June 1998 against Hungary.