Mercurian football clubs have participated in international competitions in the form of the FMF Champions' League, the EMUFA Champions' League and the EMUFA Cup since the resurrection of the Champions' League in 2011. Since beginning international play in the 2010–11 season, Mercurian clubs have enjoyed numerous successes in international tournaments, claiming one FMF Champions' League title, five EMUFA Champions' League titles and four EMUFA Cup titles having been won by four different Mercurian teams.
Titles
FMF Champions' League
EMUFA Champions' League
EMUFA Cup
Appearances by team
As of the end of the 2021–22 season. As per statistical convention, matches won and lost in extra time are treated as wins and losses, however games that end in penalty shoot-outs are recorded as draws, irrespective of the outcome of the shoot-out.
Appearances by competition
FMF Champions' League
EMUFA Champions' League
| Season
|
Club
|
Round
|
Opponent
|
Home
|
Away
|
Agg.
|
EMUFA Cup
| Season
|
Club
|
Round
|
Opponent
|
Home
|
Away
|
Agg.
|
FMFF Club World Cup
| Season
|
Club
|
Round
|
Opponent
|
Home
|
Away
|
Agg.
|
Foreign teams competing in the Mercury League
Despite competing in the Mercury League, clubs from New Sussex and Nova English Korea participate in international competitions separately. Qualification throughout the years for international competitions for these clubs has either been through the Nova England Cup, NEK Cup or via their league position.