Ashton Charles Agar (born 14 October 1993) is an Australian cricketer who plays all forms of the game at international level.

[6] After good form at the 2010–11 National Under-17 Championships, where he took 16 wickets at an average of 11.75 bowling left-arm orthodox spin,[7] he was selected to play for the Australian under-19s for a series against the West Indies under-19s in the United Arab Emirates.

Making his debut at the age of 17, Agar went on to play one under-19 Test and ten under-19 One Day International (ODI) matches for Australia.

[12][13] He made his first-class debut for Western Australia in a Sheffield Shield match against New South Wales in January 2013, replacing the injured Michael Beer as the side's spinner.

[15] Agar made his List A debut for Western Australia in the limited-overs Ryobi One-Day Cup in late January,[16] and took five wickets from his two matches,[17] with his best figures 3/51 against Queensland.

[20] He finished the Sheffield Shield season with 19 wickets from five matches,[21] including a five-wicket haul, 5/65, taken against South Australia in early March.

[22] In the same match, Agar was again involved in a substantial last-wicket partnership with Michael Hogan, with the pair adding 68 to enable Western Australia to win by one wicket.

He took eight wickets at an average of 24.25, ranked thirteenth in the competition and fourth for the Scorchers, behind Jason Behrendorff, Yasir Arafat, and Andrew Tye.

[34][35] Along with Fawad Ahmed, he was generally considered to be competing for a final position in Australia's squad for the 2013 Ashes series in England.

[41][42] Agar played in the first two Tests of the series, and despite his debut batting performance, had very limited success with the ball, taking 0/24, 2/82, 0/44 and 0/98 for a bowling average of 124.

[52][53] On 16 July 2020, Agar was named in a 26-man preliminary squad of players to begin training ahead of a possible tour to England following the COVID-19 pandemic.

He was named in the Australian test XI for the first time in five years, as an all-rounder option following Cameron Green's dislocated finger injury.