Dirty Sanchez is a British stunt and prank television series featuring a group of three Welshmen and one Englishman harming themselves, and each other, through dangerous stunts, which ran from 2003 until 2007. It was known as Sanchez Boys and Team Sanchez in the United States. The performers are the Welshmen Mathew Pritchard, Lee Dainton, Michael "Pancho" Locke and the Englishman Dan Joyce and was originally based in Newport, Wales, but later series of the show took place elsewhere in the United Kingdom and the world. Pritchard and Locke also starred as the "Pain Men" in Channel 4's Balls of Steel. The series is similar to the American series Jackass and the Finnish series The Dudesons. The show aired on MTV UK in the United Kingdom and on MTV2 in the United States.

Dirty Sanchez consists of three Welshmen named Mathew Pritchard, Lee Dainton, and Michael "Pancho" Locke, and one Englishman Dan Joyce. Pritchard and Dainton became close friends after being in a skateteam together. Dainton bought a video camera and started filming skate videos with Pritchard. They also participated in various skateboarding competitions where they met Pancho. They met Dan after Dainton saw him on The Vanessa Show. Dainton then drove to Plymouth to film with Dan for a video he was making. The 4 became close friends and started filming stunts and pranks together for around 18 months. Dainton decided to make a DVD out of it titled Pritchard vs Dainton, which came out on 23 May 2001. It was the most popular skateboarding DVD in the United Kingdom. After the executives at MTV UK saw the DVD, they wanted to make a TV show out of it. The original plan for the TV show was that Pritchard, Dainton, Pancho, and Dan traveled through the UK to find "the most fucked up people". The Sanchez Boys did not like that idea, but the executives were only interested in the stunts and pranks rather than the skateboarding. The Sanchez Boys then agreed that they would be performing the stunts and pranks themselves. The first series aired in 2003, and became the most popular MTV UK series of all time. It was broadcast in over 64 countries to over 400 million people in total.

Series one featured eight episodes and focused on each of the Sanchez members. Each episode would have them, friends and family talking about each of the Sanchez members on a certain topic the episode is about, with stunts performed in between each part of the interviews. The last episode had a psychiatrist review each of the Sanchez members behavior throughout the series.

The first series received mixed reactions. Some people called it a lackluster imitation of the American show Jackass; others complained that it pushed the boundaries of taste too far due to the extreme stunts and strong profanity, as well as full-frontal male nudity. The boys are praised by others for their fun-loving hedonism and courage in their dangerous stunts. One review claims "They make Jackass look like the Royal Shakespeare Company", and also on the cover of the Dirty Sanchez: The Movie DVD, there is a similar quote by MAXIM saying "Makes Jackass Look Like The Teletubbies."

The second series also featured eight episodes but focused on the Sanchez members trying out different jobs for one week. The first episode had them working in a hair salon. The second episode had them working on a construction site. The third episode had them train to perform a martial arts show. The fourth episode had them train to be Royal Marines. The fifth episode had them train to be airport fire fighters and the sixth episode had them train to be cowboys. Episodes seven and eight were a Behind the... and Best of... the series. The series became the biggest hit in MTV UK history and is still the only MTV UK series to be broadcast in the United States.^{[citation needed]}

The third series featured six episodes and focused on the Sanchez members touring six countries to perform six live shows with their tour manager, Johnny B, in Europe. The tour began in Sweden, then to Germany, Czech Republic, Greece, Italy and finished in Spain.

The fourth series featured seven episodes that went behind the scenes of the movie and showed the boys reactions to each sin that they had to perform in each of the countries.

The first spin-off series, called MTV Wrecked, was hosted by Pritchard and Dainton, which saw them get two contestants to do Dirty Sanchez styled stunts in order to crown a winner. The series would feature eight episodes.^{[citation needed]}