The 2013 Volta a Catalunya was the 93rd running of the Volta a Catalunya cycling stage race. It started on 18 March in Calella, ended on 24 March in Barcelona, and consisted of seven stages. It was the fifth race of the 2013 UCI World Tour season.

The race was won by the Republic of Ireland's Dan Martin of the Garmin–Sharp team, who took the lead after winning the race's queen stage – the fourth stage – to Port Ainé–Rialp, and maintained the overall lead of the race until the end. As a result, Martin – who had previously finished the race in second place twice and fourth place over the previous four years – became the second Irish rider to win the race after Sean Kelly, who won the race in 1984 and 1986. Martin won the general classification by 17 seconds over runner-up Joaquim Rodríguez (Team Katusha), while Lampre–Merida's Michele Scarponi completed the podium, 17 seconds behind Rodríguez and 34 seconds down on Martin; Scarponi had started the final stage in fifth place, but moved up after proficient attacking on the closing circuits at Barcelona's Montjuïc hill.

The race's other classifications were dominated by the members of the race's opening stage breakaway; Cannondale's Cristiano Salerno was the winner of the red jersey for the mountains classification, while Christian Meier (Orica–GreenEDGE) was the winner of the white jersey for the sprints classification, as well as the yellow jersey for a special sprints classification, honouring the 100th edition of the Tour de France to be held later in the year. Garmin–Sharp were the winners of the teams classification, after also placing Tom Danielson in the top ten overall.

As the Volta a Catalunya was a UCI World Tour event, all UCI ProTeams were invited automatically and obligated to send a squad. Originally, eighteen ProTeams were invited to the race, with four other squads given wildcard places, and as such, would have formed the event's 22-team peloton. Team Katusha subsequently regained their ProTour status after an appeal to the Court of Arbitration for Sport.

The 22 teams that competed in the race were:

Among the 174-rider start list – each team entered eight riders with the exception of Lampre–Merida and Orica–GreenEDGE, who entered seven – were four previous winners of the race. 2007 winner Vladimir Karpets served as a domestique for the 2009 winner Alejandro Valverde in the Movistar Team, while 2010 winner Joaquim Rodríguez was one of the pre-race favourites for Team Katusha. The other previous winner, Michele Scarponi – who won the 2011 edition of the race after Alberto Contador's results were expunged – also served as the leader of his team, leading the Lampre–Merida squad.

For the second successive year, the Volta a Catalunya began with a circuit race around the town of Calella. As part of the itinerary, there were five categorised climbs including three ascents of the third-category Alt de Collsacreu, although the most difficult climb of the stage was the first-category Alt de Montseny climb, measuring 6 km (3.7 mi) at an average gradient of 5.6%. Also part of the route were three sprint points; two for the intermediate sprints classification – in Sant Esteve de Palautordera and Calella respectively – and one towards the special sprints classification, in honour of the 100th anniversary of the Tour de France, coming at the 97 km (60.3 mi) point of the stage, in Tordera. A pair of riders – Orica–GreenEDGE's Christian Meier and Cannondale rider Cristiano Salerno – made the primary breakaway from the field, just after the start of the stage.

The duo managed to extend their advantage over the main field to in excess of eight-and-a-half minutes just after the first intermediate sprint point at Sant Esteve de Palautordera. At this point, Omega Pharma–Quick-Step and the Movistar Team moved their riders to the front of the main field, in order to steadily bring back the lead gap. Meier picked up all the points in relation to the sprints classifications while Salerno accrued enough points in order to pick up the first red jersey as mountains classification leader. The leaders were caught on the day's final climb, the third passage of the Alt de Collsacreu. On the descent, Team Sky forced the pace through Bradley Wiggins, and the acceleration caused a break in the field and allowed thirteen riders to escape off the front. They remained clear all the way to Calella, where Omega Pharma–Quick-Step's Gianni Meersman prevailed in a sprint finish, to take the first leader's jersey via time bonuses.