This is an attempt to list all the teams Celtic have played in competitive European fixtures

Team	Year	Competition
Valencia	1962/63	Intercities Fair Cup
Basel	1963/64	Cup Winners Cup
Dinamo Zagreb	1963/64	Cup Winners Cup
Slovan Bratislava	1963/64	Cup Winners Cup
MTK Budapest	1963/64	Cup Winners Cup
Leixoes SC	1964/65	Intercities Fair Cup
FC Barcelona	1964/65	Intercities Fair Cup
Go Ahead Deventer	1965/66	Cup Winners Cup
AGF (Aarhus)	1965/66	Cup Winners Cup
Dinamo Kiev	1965/66	Cup Winners Cup
Liverpool	1965/66	Cup Winners Cup
Zurich	1966/67	European Cup
Nantes	1966/67	European Cup
Vojvodina Novi	1966/67	European Cup
Dukla Prague	1966/67	European Cup
Inter Milan	1966/67	European Cup Final
Dynamo Kiev	1967/68	European Cup
AS Saint-Etienne	1968/69	European Cup
Red Star (Belgrade)	1968/69	European Cup
AC Milan	1968/69	European Cup
Basel	1969/70	European Cup
Benfica	1969/70	European Cup
AC Fiorentina	1969/70	European Cup
Leeds United	1969/70	European Cup
Feyenoord	1969/70	European Cup Final
KPV (Kokkola)	1970/71	European Cup
Waterford	1970/71	European Cup
Ajax	1970/71	European Cup
B1903 (Copenhagen)	1971/72	European Cup
Sliema Wanderers	1971/72	European Cup
Ujpesti Dozsa	1971/72	European Cup
Internazionale	1971/72	European Cup
TPS (Turku)	1973/74	European Cup
Vejle BK	1973/74	European Cup
FC Basel	1973/74	European Cup
Atletico Madrid	1973/74	European Cup
Olympiakos (Pireus)	1974/75	European Cup
Valur	1975/76	Cup Winners Cup
Boavista	1975/76	Cup Winners Cup
FSV Zwickau	1975/76	Cup Winners Cup
Wisla Krakow	1976/77	Uefa Cup
La Jeunesse D'Esch	1977/78	European Cup
Wacker Innsbruck	1977/78	European Cup
Partizani (Tirana)	1979/80	European Cup
Dundalk	1979/80	European Cup
Real Madrid	1979/80	European Cup
Diosgyor VTK	1980/81	Cup Winners Cup
Politehnica Timisoara	1980/81	Cup Winners Cup
Juventus	1981/82	European Cup
Ajax	1982/83	European Cup
Real Sociedad	1982/83	European Cup
Aarhus	1983/84	Uefa Cup
Sporting Lisbon	1983/84	Uefa Cup
Nottingham Forest	1983/84	Uefa Cup
Ghent	1984/85	Cup Winners Cup
Rapid Vienna	1984/85	Cup Winners Cup
Athletic Madrid	1985/86	Cup Winners Cup
Shamrock Rovers	1986/87	European Cup
Dynamo Kiev	1986/87	European Cup
Borussia Dortmund	1987/88	Uefa Cup
Honved	1988/89	European Cup
Werder Bremen	1988/89	European Cup
Partizan Belgrade	1989/90	Cup Winners Cup
Ekeren,	1991/92	Uefa Cup
Xamax Neuchatel	1991/92	Uefa Cup
Cologne	1992/93	Uefa Cup
Borussia Dortmund	1992/93	Uefa Cup
Young Boys	1993/94	Uefa Cup
Sporting Lisbon	1993/94	Uefa Cup
Dinamo Batumi	1995/96	Cup Winners Cup
PSG	1995/96	Cup Winners Cup
Kosice	1996/97	Uefa Cup
Hamburg	1996/97	Uefa Cup
Inter Cabeltel	1997/98	Uefa Cup
Tirol Innsbruck	1997/98	Uefa Cup
Liverpool	1997/98	Uefa Cup
Dinamo Zagreb	1998/99	Champions League
Vitoria Guimaraes	1998/99	Uefa Cup
Zurich	1998/99	Uefa Cup
Cwmbran Town	1999/00	Uefa Cup
Hapoel,	1999/00	Uefa Cup
Olympique Lyonnais	1999/00	Uefa Cup
Jeunesse Esch	2000/01	Uefa Cup
HJK	2000/01	Uefa Cup
Bordeaux	2000/01	Uefa Cup
Ajax	2001/02	Champions League
Juventus	2001/02	Champions League
Porto	2001/02	Champions League
Rosenborg	2001/02	Champions League
Valencia	2001/02	Uefa Cup
Basel	2002/03	Champions League
FK Suduva	2002/03	Uefa Cup
Blackburn Rovers	2002/03	Uefa Cup
Celta Vigo	2002/03	Uefa Cup
VfB Stuttgart	2002/03	Uefa Cup
Liverpool	2002/03	Uefa Cup
Boavista	2002/03	Uefa Cup
FC Porto	2002/03	Uefa Cup Final
Kaunas	2003/04	Champions League
MTK Hungaria	2003/04	Champions League
Bayern Munich	2003/04	Champions League
Olympique Lyonnais	2003/04	Champions League
Anderlecht	2003/04	Champions League
FK Teplice	2003/04	Uefa Cup
FC Barcelona	2003/04	Uefa Cup
Villareal	2003/04	Uefa Cup
FC Barcelona	2004/05	Champions League
AC Milan	2004/05	Champions League
Shakhtar Donetsk	2004/05	Champions League
Artmedia Bratislava	2005/06	Champions League
Manchester United	2006/07	Champions League
Copenhagen	2006/07	Champions League
Benfica	2006/07	Champions League
AC Milan	2006/07	Champions League
Spartak Moscow	2007/08	Champions League
Shakhtar Donetsk	2007/08	Champions League
AC Milan	2007/08	Champions League
Benfica	2007/08	Champions League
FC Barcelona	2007/08	Champions League
Aalborg BK	2008/09	Champions League
Villareal	2008/09	Champions League
Manchester United	2008/09	Champions League
FC Dynamo Moscow	2009/10	Champions League
Arsenal	2009/10	Champions League
Hapoel Tel-Aviv	2009/10	Europa League
Rapid Vienna	2009/10	Europa League
HSV Hamburg	2009/10	Europa League
SC Braga	2010/11	Champions League
FC Utrecht	2010/11	Europa League
FC Sion	2011/12	Europa League
Athletico Madrid	2011/12	Europa League
Udinese	2011/12	Europa League
Rennes	2011/12	Europa League
HJK Helsinki	2012/13	Champions League
Helsingborg IF	2012/13	Champions League
Benfica	2012/13	Champions League
Spartak Moscow	2012/13	Champions League
FC Barcelona	2012/13	Champions League
Juventus	2012/13	Champions League