New York City FC midfielder Aiden O'Neill is ready to represent Australia at the 2026 FIFA World Cup. The 27-year-old has made 39 appearances for the club and will be part of the Socceroos' squad in the tournament. O'Neill started his professional career at English Premier League side Burnley FC, then broke through with A-League club Melbourne City and Belgian powerhouse Standard Liège. Following his successful stint in Belgium, O'Neill joined NYCFC in 2025 and has made 39 appearances across all competitions. Last year, O'Neill helped NYCFC make the Eastern Conference Final in the Audi MLS Cup Playoffs. O'Neill has been a key starter for Australia, featuring in each of the Socceroos' last 15 matches. The Socceroos are in Group D alongside the United States, Paraguay and Türkiye. The 2026 World Cup has expanded from the usual 32 nations to 48 total. The top two teams advance from each group, and the top eight third-place finishers also make the knockout phase (Round of 32). This is Australia's seventh World Cup trip and sixth in a row, qualifying for every tournament since 2006. The Socceroos have twice reached the Round of 16, in 2006 and 2022, for their best-ever finish.