Carlos Velasco Carballo is a Spanish professional football referee. He was FIFA listed since 2008.

He is affiliated with the Madrid committee and has officiated in Spanish Primera Division since 2004, as well as in international matches since 2008. Velasco Carballo officiated 2011 UEFA Europa League Final match in Dublin, between Porto and Braga.

On 20 December 2011, UEFA named him one of the twelve referees for UEFA Euro 2012. Velasco Carballo took charge of the tournament's opening match between Poland and Greece, issuing a controversial first-half red card to Greek defender Sokratis Papastathopoulos, before sending-off Poland goalkeeper Wojciech Szczesny in the second period as the teams drew 1-1 in Warsaw. He also refereed in the 2014 FIFA World Cup, in which the quarterfinal match he officiated between Brazil and Colombia was described as out of hand, after a tournament-ending back injury was suffered by Brazil striker Neymar on a challenge by Colombian defender Juan Camilo Zuniga. In December 2015, he was named one of the eighteen referees appointed for UEFA Euro 2016.