Ramon Sinkeldam (born 9 February 1989) is a Dutch former cyclist, who competed as a professional from 2012 to 2024.

Born in Wormer, Sinkeldam rode for the Rabobank Continental Team for his entire amateur career, between 2007 and 2011.

He achieved his first professional victories with the team in October 2012, winning two stages at the Tour of Hainan in China.

Sinkeldam was also 2nd in the Dutch National Road Race Championships, behind Niki Terpstra.

On 23 January 2016, he was one of the six members of the Team Giant–Alpecin who were hit by a motorist who drove into on-coming traffic while they were training in Spain.