The Hammers were expected to make the managerial change on the back of Saturday evening’s dismal 4-1 home defeat against Liverpool which left the side in the final relegation place on nine points with just two wins so far this season.
The 49-year-old former Croatia international defender and manager was appointed on a three-year deal in the summer of 2015 and he enjoyed a successful debut campaign as the Londoners finished seventh in what was the club’s final season at Upton Park.
We believe a change is now necessary in order for the club to move forward positively and in line with their ambition.
Bilic managed to guide the side to an 11th-placed finish last season as the team initially struggled to adapt to their new surroundings at the London Stadium.
But another poor start to the 2017-18 season has resulted in the club opting to sack him after 11 games.
“West Ham United can confirm that Slaven Bilic has today left his position with the club,” the Hammers said in a statement.
The club “believe a change is now necessary in order for the club to move forward positively and in line with their ambition”, the statement added.
Bilic’s coaching assistants Nikola Jurcevic, Edin Terzic, Julian Dicks and Miljenko Rak have also left the club with immediate effect.
Former Everton and Manchester United manager, Moyes, is the firm favourite to replace Bilic in charge of the Hammers.
The 54-year-old Scot has been out of work since departing relegated Sunderland in the summer having won just eight of his 43 games in charge at the Stadium of Light.
Moyes confirmed over the weekend that he would be interested in a return to management, “if the right opportunity comes around”.