2019–20 Lille OSC season

The 2019–20 season was Lille OSC's 76th season in existence and the club's 20th consecutive season in the top flight of French football. In addition to the domestic league, Lille participated in this season's edition of the Coupe de France, the Coupe de la Ligue, and the UEFA Champions League. The season covered the period from 1 July 2019 to 30 June 2020.

The club made their first appearance in the UEFA Champions League since 2012.

Squad information
Players and squad numbers last updated on 13 August 2019. Appearances include league matches only. Note: Flags indicate national team as has been defined under FIFA eligibility rules. Players may hold more than one non-FIFA nationality.

Matches
The Ligue 1 schedule was announced on 14 June 2019. The Ligue 1 matches were suspended by the LFP on 13 March 2020 due to COVID-19 until further notices. On 28 April 2020, it was announced that Ligue 1 and Ligue 2 campaigns would not resume, after the country banned all sporting events until September. On 30 April, The LFP ended officially the 2019–20 season.

Group stage

 * Group H

Appearances and goals
! colspan=14 style=background:#dcdcdc; text-align:center| Goalkeepers

! colspan=14 style=background:#dcdcdc; text-align:center| Defenders

! colspan=14 style=background:#dcdcdc; text-align:center| Midfielders

! colspan=14 style=background:#dcdcdc; text-align:center| Forwards

! colspan=14 style=background:#dcdcdc; text-align:center| Players transferred out during the season

Goalscorers
Last updated: 8 March 2020

Disciplinary record
Last updated: 1 September 2019