Millwall FC: This London football club has the 'sweariest' fans in the league
Millwall fans are renowned for their spirited support of the club
A new study has found that Millwall fans are the ‘sweariest’ in the league.
The study, conducted by tickets comparison site SeatPick, found that Millwall FC supporters use the most explicit language online among all Championship football teams.
The study analysed the comments on the 200 most popular posts for each of the subreddits for all 24 teams in the 2025/26 Championship season to determine which club's supporters were most likely to use profanity when discussing their team online.
Swear words that were used the most by fans on Reddit included: 'f*ck, sh*t, p*ss, pr*ck, sh*te, hell, damn, d*ck, crap, and the C-word.
Millwall FC topped the rankings with 11.17% of all comments in their subreddit containing foul language.
The south London club, which has long held a reputation for passionate support, had the highest percentage of explicit comments from its 2,338 subscribers.
The study also found that Charlton Athletic, also based in London, have the most polite fans, with just 2.48% of comments containing expletives.
Top 10 Championship teams with the most “foul-mouthed” fans
1. Millwall FC
2. Oxford United
3. Preston North End
4. Stoke City
5. Watford FC
6. West Bromwich Albion
7. Sheffield United
8. Southampton FC
9. Derby County
10. Sheffield Wednesday