"We have four tournaments left, and Enzo and the club believe that a change gives the team its best chance of getting back on track," Chelsea writes.
Maresca was appointed in the summer of 2024 and led the team to victory in the Conference League in May and the Club World Cup in July last year.
Chelsea are currently fifth in the Premier League, but after a 2-2 home draw with Bournemouth on Tuesday, the team have won only once in their last seven matches and have lost to the other top teams. In terms of points, Chelsea are closer to 15th place than to third-placed Aston Villa.
In addition to the league, Chelsea play in the FA Cup, the League Cup and the Champions League.
Chelsea next face Manchester City away in the Premier League on Sunday.
