Tony Pulis began the season as the team's head coach but a poor run of form led to his dismissal in November; he was succeeded by Alan Pardew later that month.

West Bromwich Albion's relegation to the Championship was confirmed on 8 May 2018, by virtue of Southampton earning a 1–0 away victory at fellow strugglers Swansea City.

[5][6] They also installed new giant screens inside the stadium,[7] created a sensory area—to cater for young fans on the autism spectrum—and added "nostalgic" artwork to the concourses.

[19] The team's main shirt sponsor was Palm Eco-Town Development Company, whom West Bromwich Albion owner Guochuan Lai had served as general manager for over 20 years.

[21][22] Assistant head coach Dave Kemp retired after spending over 40 years in football and was replaced by Gary Megson, who returned after having led Albion to the Premier League as manager in the 2000s.

[25] Prior to the start of the season, sports journalists were unanimous in forecasting that Albion would finish in the bottom half of the Premier League but avoid relegation.

[a] West Brom's provisional fixture list was announced on 14 June 2017,[66] but as is common for Premier League clubs, a number of the Saturday matches were subsequently rescheduled for live broadcast on television.

[75] West Brom's first away match of the season also resulted in a 1–0 win, Hal Robson-Kanu scoring the second half goal against Burnley before being sent off for elbowing Matthew Lowton 12 minutes later.

[78] Albion's goalless draw at home to West Ham United was Tony Pulis' 100th Premier League game in charge of the club, making him the first Baggies head coach to reach that milestone.

West Brom finally picked up their first league win across 5 months and 20 games at home against Brighton, defenders Jonny Evans and Craig Dawson each scored a header from corners respectively.

One week later, Albion earned a 1–1 draw away to Everton, but unfortunately the match is overshadowed as home midfielder James McCarthy suffered a broken leg after putting out a harsh tackle on Salomón Rondón and was set to miss out for a lengthy period.

As a Premier League club, Albion entered the 2017–18 FA Cup at the third round stage and were drawn away to either Exeter City or Forest Green Rovers.

[86] West Bromwich Albion's fourth-round match against Liverpool at Anfield was moved to a Saturday night slot for live screening on BT Sport.

[88] The newly introduced technology did bring great impact to the process of the game, where referee Craig Pawson disallowed a West Brom goal and awarded Liverpool a penalty with VAR's assistance.

As one of the Premier League clubs not involved in European competition, Albion entered the 2017–18 EFL Cup at the second round stage, where they were drawn away to Accrington Stanley.

[91] Goals from Salomón Rondón, Matt Phillips and Jay Rodriguez—his first for the club—ensured Albion's progression into the next round, while Tom Dallison scored a late consolation for the home side.

[93] Midfielder Claudio Yacob scored for the first time in almost three years but two goals from City's Leroy Sané meant that West Brom were eliminated from the competition.

The blue caps feature the club's original crest from 1884 as well as a unique number denoting the order of each player's league debut for the team.