Andrew Mark "Andy" Fenby (born 24 October 1985) is a Welsh rugby union footballer who plays at fullback or on the wing for English club London Irish. Fenby's professional career started relatively late, as he earned his first professional contract with Newcastle Falcons at the age of 24. After a brief cameo for the Falcons at the end of the 2008–09 season, he returned to Wales to sign for the Scarlets.