The 1990–91 Roller Hockey Champions Cup was the 27th edition of the Roller Hockey Champions Cup organized by CERH.

Barcelos achieved their first title ever.

The champions of the main European leagues and Porto, as title holder, played this competition, consisting in a double-legged knockout tournament.

	First round						Quarterfinals						Semifinals						Final
	Walsum	2	4	6
	Barcelos	13	16	29
							Barcelos	4	5	9
							Porto	4	4	8
													Barcelos	22	23	45
													La Vendéenne	3	0	3
							Kurink	6	2	8
							La Vendéenne	4	5	9
																			Barcelos (a.e.t.)	4	4	8
																			Monza	4	3	7
							Liceo	4	2	6
							Monza	5	3	8
													Monza	11	3	14
													Thunerstern	2	1	3
							Dennenberg	7	1	8
							Thunerstern	10	11	21

Source: ^[1]