Daniel Mortimer (born 13 June 1989) is an Australian former professional rugby league footballer who last played as a hooker, scrum-half or stand-off for the Leigh Centurions in the Championship.

He previously played for the Parramatta Eels, Gold Coast Titans, Sydney Roosters and the Cronulla-Sutherland Sharks.

Born in Sydney, Mortimer attended James Sheahan Catholic High School while playing his junior football for Orange CYMS before being signed by the Parramatta Eels.

[6][7] In Round 16 against the Brisbane Broncos, Mortimer scored his first NRL career try in the Eels 21–14 win at Parramatta Stadium.

[11] In 2010, after a lacklustre start to the season, Mortimer reflected on 2009 saying, "We hit form that not many teams have done in the history of footy, so to be judged on that's pretty harsh".

On 22 February 2014, Mortimer played in the Sydney Roosters 2014 World Club Challenge 36–14 win over the Wigan Warriors at SFS.

[32] In Round 3 against the Wests Tigers, Mortimer scored his first club try for the Titans in their 30–18 win at Cbus Super Stadium.

[33] After sustaining a hamstring injury and the signing of Nathan Peats from the Parramatta Eels, Mortimer struggled to break into the Titans first 17 squad.

On 5 November 2016, Mortimer signed with the Cronulla-Sutherland Sharks as being one of the potential replacements for the recently retired Michael Ennis at Hooker.