text: UEFA Cup Winners' Cup – 9–0 in 1970–71 vs Haka; 8–0 in 1993–94 vs Balzers; 5–0 in 1988–89 vs Inter Bratislava
  UEFA Europa Conference League – 4–0 in 2022–23 vs Makedonija GP
  UEFA Intertoto Cup – 4–1 in 1996 vs Hibernians
  Other trophies
  Tournament for Stalin's Birthday, Bulgaria:
  Winners (1): 1951
  Tournament in Antwerp, Belgium:
  Winners (1): 1958
  Allied Armies Spartakiade:
  Winners (1): 1958
  Republican Spartakiad, Bulgaria:
  Winners (1): 1959
  Mohammed V Trophy, Morocco:
  Winners (1): 1967
  Trofeo Ciudad de Palma, Spain:
  Winners (2): 1970, 1971
  Blitz Tournament Smolyan, Bulgaria:
  Winners (1): 1976
  Trofeo Costa de Valencia, Spain:
  Winners (1): 1976
  Trofeo Ciudad de Zaragoza, Spain:
  Winners (1): 1977
  Cup Olympic Fire, Bulgaria:
  Winners (1): 1980
  Torneio Costa Azul, Portugal:
  Winners (2): 1989, 1991
  Tournament Shumen, Bulgaria:
  Winners (1): 1993
  Cup Grand-hotel Varna, Bulgaria:
  Winners (1): 1995
  PlayStation Cup, Bulgaria:
  Winners (4) (record): 2002, 2005, 2006, 2007
  Thöle-Pokal, Germany:
  Winners (1): 2003
  Arona Cup, Spain:
  Winners (1): 2004
  Аrcadia Cup, Turkey:
  Winners (1): 2007
  Sporx Cup, Netherlands and Germany:
  Winners (1): 2007
  IFC Pego Cup, Spain:
  Winners (1) (record): 2008
  Albena Cup, Bulgaria:
  Winners (1): 2009
  Martyrs of 17 February Cup, Libya:
  Winners (1): 2012
  Tournament Tsarsko selo, Bulgaria:
  Winners (1): 2016
  Stubai Cup, Austria:
  Winners (1): 2017