John Edward Marquis (born 16 May 1992) is an English professional footballer who plays as a centre-forward for EFL League One club Shrewsbury Town.

[5][6] A month later, on 5 September 2009, Marquis made his professional debut for Millwall, coming on as a second-half substitute for Gary Alexander, in a 2–0 defeat to Bristol Rovers.

[15] After surgery for hernia problems,[16] he returned to the first team on 17 September 2011, playing the whole of a 0–0 draw against rivals West Ham United.

[21] After returning to the first team against Burnley, in a 2–0 defeat,[22] Marquis scored his first goal of the season in a 2–1 win over Aston Villa in the fourth round of the FA Cup.

The 2013–14 season saw Marquis out of the first team at Millwall following a groin injury sustained during the club's pre–season tour and subsequently loaned out to Portsmouth in search of first-team football.

[38] He joined non-league Staines Town on work experience in March 2010;[39] he scored a hat-trick for them in a match against Thurrock in April 2010.

[41][42] After appearing as an unused substitute against Fleetwood Town on 21 September 2013,[43] he scored his first Portsmouth's debut seven days later, in a 4–2 loss against York City.

[54] On the same day, he made his Northampton Town debut, coming on as a second-half substitute in a 2–1 against Torquay United, who he had played for in the first half of the season.

[60] Two days later, Marquis made his Cheltenham Town debut, coming on as a second-half substitute in a 1–0 win over Hartlepool United.

[61] Four days later, Marquis scored his first Cheltenham Town goal, in the first round of the EFL Trophy, a 2–0 win over Oxford United.

[64] Although not preferred in the first team by Mark Yates,[65] Marquis went on to make sixteen appearances and score twice before returning to his parent club in November.

[75] At the end of the 2014–15 season, having scored eight times in twenty–one appearances, the club were keen to keep Marquis on a long-term basis but were unsuccessful when he signed a contract with Millwall.

[84] After scoring his first goal on his Northampton Town return, in a 2–1 win over York City on 23 February 2016,[85] Marquis was praised by manager Chris Wilder for his performance.

[86] After his debut Marquis immediately established himself in the Northampton Town's first team and formed a striking partnership with James Collins.

[92] On 13 June 2016, Marquis signed for Doncaster Rovers on a two-year deal,[93] having been previously linked with a move to Gillingham.

[95] Marquis made his Doncaster Rovers debut in the opening game of the season at Accrington Stanley, where he started and played the full 90 minutes of a 3–2 loss.

[101] After scoring seven times by the end of 2016, including a brace against Exeter City on 12 November 2016,[102] his performances continued to receive praise;[103] he was described by Ferguson as "one of my best ever signings.

[128] On 4 July 2022, Marquis joined recently promoted League One club Bristol Rovers on a two-year deal.

[131] Marquis opened his account for the club in his fourth appearance, scoring the only goal as Rovers defeated Oxford United.