Edgar Wallace Chadwick (14 June 1869 – 14 February 1942) was a left-sided footballer who had a long and distinguished career with Everton during the 1890s.

When he played as a forward against Accrington on 8 September 1888, Chadwick was 19 years 86 days old; which made him, on that first weekend of league football, Everton's youngest player.

In 1893, Everton reached the final of the FA Cup, played at Fallowfield Stadium in Manchester, where they were defeated 1–0 by Wolverhampton Wanderers.

Over the next few seasons, Everton continued to be a major force in the Football League, coming runner-up in 1894–95 and reaching another Cup final in 1897 played at Crystal Palace where again they were defeated, this time by Aston Villa, 3–2.

His season at Burnley was not a great success, and although Chadwick was the team's top scorer, with ten goals, he could not prevent them being relegated to the Second Division.

In August 1900 he moved to Southern League Southampton, where he was re-united with his former Everton left-wing colleague Alf Milward.

In May 1902 he sought fresh fields, but as Burnley still held his Football League registration he had to pay them £35 to release him to join Liverpool, where he stayed for two seasons before moving on to Blackpool in 1904.

The experts are in disagreement as to whether Chadwick, or his predecessor Cees van Hasselt, should be considered as the first manager of the Netherlands national team.

During the 1912 Summer Olympics held in Stockholm (where eleven teams participated in the football tournament, against only six in 1908) the Dutch defeated Sweden and Austria, but lost in the semi-final 4–1 to Denmark.

The greatest success of Chadwick's career as Dutch manager came on 24 March 1913, in a friendly against the English amateurs, which resulted in a 2–1 victory.