Mark John Cueto MBE (born 26 December 1979 in Workington, Cumbria) is a former English international rugby union player.

He owes his surname to his Spanish great-grandfather, Antonio, who sailed from Santander in the 1900s and settled in Maryport, Cumbria, where he set up a fish-and-chip shop.

[3] Cueto is married to Suzie (née Richards), originally from Corby in Northamptonshire, who works in the Manchester United FC hospitality department.

[16] At the start of the 2011–12 season, in August, Cueto was replaced as Sale captain, with Sam Tuitupou taking over role.

[17] On 8 February 2013 Cueto broke the Premiership try scoring record of 75 by Steve Hanley, touching down for his 76th try in a 21-16 comeback win over Exeter.

Cueto was appointed Member of the Order of the British Empire (MBE) in the 2016 New Year Honours for services to rugby union.

[20] Cueto appears alongside All Blacks captain Richie McCaw on the cover of the United Kingdom version of the EA Sports game Rugby 08.

He was not selected for the full England squad during Clive Woodward's time as head coach, having to wait until November 2004 for his début against Canada at Twickenham, when he scored two tries.

In 2005, he was called up to the British & Irish Lions for their New Zealand tour after original selection Iain Balshaw was ruled out due to injury.

Having been dropped for the next match against Samoa, he was installed to the English defence for the encounter with Tonga, which ensured England's progression through to the quarter-final stage.

This was not immediately obvious and Cueto's left leg was subsequently raised within the boundary of play, travelling over it after the ball was on the ground; this led many to believe the judgement had been wrongly made on the basis of the latter movement.

A division of opinion still exists, although most experts including BBC Radio 5 Live presenter Ian Robertson subsequently backed Dickinson's decision.

Cueto missed the first 2 games of the 2011 Rugby World cup in New Zealand due to a back injury, but completed a hat-trick of tries when returning to the starting line up against Romania.