Antoine Sibierski

Early career

Born in Lille, Sibierski began his career at his hometown club, where he moved up the ranks and played for four complete seasons in the first team, before playing for Auxerre and Nantes; he won the 2000 French Cup with the latter, in the final of which Sibierski scored both of Nantes' goals. He then joined Lens, and eventually became club captain during his three-year stay.

Manchester City

Sibierski moved to Manchester City for a fee of £700,000 in August 2003, where he scored on his debut against Charlton Athletic. He was a regular substitute for the team, having started only eighteen of the thirty-three games he participated in, during an all-important first season in which he scored seven goals. The 2005–06 season saw him fighting for a new contract at the club. Early on in the season, he won a place up front due to the injury of Andy Cole, but was soon reverted to the bench. Sibierski was subsequently released by the club that summer.

Newcastle United

Newcastle United signed Sibierski on 31 August 2006 on a one-year contract, just two hours and twenty minutes before the close of the transfer window. He scored on his Newcastle debut in the UEFA cup first round tie against Levadia. His league debut for the club came at West Ham United on 17 September, and he scored his first domestic goal for Newcastle on 7 November against Watford in the League Cup. He scored his first league goal for the club in a 1–0 win over Portsmouth.…

Sibierski is of Polish descent through his paternal grandfather, who came to France from Poland to work in the mines. He represented France at the 1996 Summer Olympics, making three appearances.

After finishing his playing career, Sibierski briefly became a football agent with his brother. From 2024 to 2026, he served as the sporting director of Troyes. On 4 May 2026, he was appointed sporting director of Belgian club Anderlecht.

Former Lille teammate Frédéric Dindeleux, who had been his friend since the age of eight, was best man at Sibierski's wedding to Isabelle. The couple had three children together: two daughters, Axelle born in 2000 and Alessandro born in 2006 . Following the death of his 18-year-old elder daughter Sibylle on 1 February 2010, a charity "Fonds de Dotation Sibylle Sibierski" was formed in her name.