João Pedro Cavaco Cancelo (জোয়াও কানসেলো) is a Portuguese professional footballer who plays primarily as a full-back for Saudi club Al-Hilal and the Portugal national team.

After coming through Benfica's youth academy, Cancelo began playing for the club's reserve team in 2012 and was promoted to the first team two years later. He was subsequently loaned to La Liga club Valencia during the 2014–15 season, before the move was made permanent in 2015. Cancelo was on loan to Serie A team Inter Milan during the 2017–18 season, in which he was included in Serie A's Team of the Year. Cancelo's performances sparked the interest of Italian rivals Juventus, who signed him in 2018 for a reported fee of €40.4 million. During his stint with Juventus, Cancelo won the league and the Supercoppa Italiana in his first and only season.

Cancelo represented Portugal in the 2012 UEFA European Under-19 Championship. He was also selected for the following edition in Lithuania. With the under-20s, Cancelo appeared at the 2013 FIFA U-20 World Cup and the 2014 Toulon Tournament. He featured in two games in the former competition, with the country reaching the round of 16.

Cancelo was part of the under-21 squad that competed in the 2015 UEFA European Under-21 Championship. He replaced left-back Raphaël Guerreiro midway through the second half of the 5–0 semi-final win against Germany for his only appearance of the tournament, in a final runner-up finish to Sweden.

Cancelo was called up for the first time to the senior team by head coach Fernando Santos on 26 August 2016, playing the full 90 minutes of a 5–0 friendly win over Gibraltar in Porto on 1 September and scoring the third goal. In the following month he added another two, in as many 2018 FIFA World Cup qualifiers against Andorra (6–0, home) and Faroe Islands (away, same score).

In May 2018, Cancelo was included in a preliminary 35-man squad for the finals in Russia, but he did not make the final cut. Cancelo was selected for all four matches in the league phase of the 2018–19 UEFA Nations League group stage, helping the hosts Portugal qualify to the inaugural Nations League Finals in June 2019. In the UEFA Nations League Finals, Portugal defeated the Netherlands 1–0 in Porto to win the trophy.

Cancelo was initially included in Portugal's squad for UEFA Euro 2020 in June 2021; however, he tested positive for COVID-19 two days prior to the team's opening match against Hungary, and was replaced in the squad by Diogo Dalot.

Cancelo is known for his speed, energy and offensive capabilities, as well as his technique, dribbling skills, creativity and crossing ability. He is capable of playing as a full back or winger on either flank, although he usually plays on the right. During his time at Manchester City, he was considered one of the best full backs in Europe. Despite his ability going forward, however, his tactical sense, positioning, and defensive skills have been cited as weaknesses in the media.

When playing as a traditional full back he times his forward runs well. He tends to move forward when in possession rather than making lung-busting overlapping runs around the outside of a teammate, and he prefers to receive to feet rather than chase through balls. On the ball, he is equally capable of cutting infield from the right as he is going around the outside, and will regularly look to cross with his weaker left foot or drive inside the opposing left back and look to combine with those further forward. He is a very strong dribbler and that ability, combined with the fact he is confident on either foot, makes him extremely difficult to defend against. His speed also allow him to be fast enough that to recover at defensive transitions, and is always aware of the space he leaves behind him when his team attacks.

In January 2013, Cancelo's mother Filomena was killed in a car accident on the A2 motorway in Seixal. Cancelo and his brother were asleep and received only minor injuries. Due to the emotional toll it took on him, Cancelo considered retiring from football.

Cancelo and his girlfriend Daniela Machado had a daughter in 2019. On 30 December 2021, their Manchester home was burgled by four men who stole some of his personal jewellery. Cancelo retaliated in self-defence and suffered facial injuries, but said that his family were safe.