The following categories exist on the wiki, and may or may not be unused. Also see wanted categories.
- Radiance Star Parallel cards (123 members)
- Radnin (1 member)
- Rahal (1 member)
- Raja (1 member)
- Rakgi (1 member)
- Rakgi's father (1 member)
- Ralph (1 member)
- Ramada (1 member)
- Ranch items in Suikoden II (4 members)
- Rania (1 member)
- Rare card variants (3 members)
- Raven (1 member)
- ReMiFa (1 member)
- Recipe items (43 members)
- Recipe items in Suikoden II (41 members)
- Recipe items in Suikoden III (0 members)
- Reference book releases (8 members)
- Refiants (2 members)
- Regions (18 members)
- Regius (1 member)
- Rein Penenberg (3 members)
- Reinhold (1 member)
- Rene (2 members)
- Renefarious (1 member)
- Retso (1 member)
- Richard (1 member)
- Richmond (1 member)
- Ride On effect cards (8 members)
- Rikie (1 member)
- Rikimaru (1 member)
- Rita (1 member)
- Robe equipment (2 members)
- Robe equipment in Suikoden (0 members)
- Robe equipment in Suikoden II (0 members)
- Roberto (1 member)
- Robo cards (10 members)
- Rochelle Kollek (1 member)
- Rodric (1 member)
- Roland Lesaurus (1 member)
- Rolf Laug (1 member)
- Roog (1 member)
- Roy (1 member)
- Royal Army cards (100 members)
- Ruby (1 member)
- Rujin (1 member)
- Rulodia (1 member)
- Rune attribute cards (0 members)
- Rune crystals (1 member)
- Rune effect cards (42 members)
- Rune fragments (12 members)