The following categories exist on the wiki, and may or may not be unused. Also see wanted categories.
- 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)
- Rune unite spells (5 members)
- Runes (215 members)
- Runes in Suikoden (53 members)
- Runes in Suikoden II (102 members)
- Runes in Suikoden III (73 members)
- Runes in Suikoden IV (37 members)
- Runes in Suikoden Tactics (42 members)
- Runes in Suikoden V (70 members)
- Ruth Demongeot (3 members)
- Sagiri (1 member)
- Sairoh (1 member)
- Salome Harras (1 member)
- Salum Barows (1 member)
- Sanae Yamamoto (2 members)
- Sancho (1 member)
- Sarah (Suikoden) (1 member)
- Sarah (Suikoden III) (2 members)
- Sasarai (3 members)
- Sasuke (2 members)
- Satiyaka (1 member)
- Sau Jin (1 member)
- Savina (1 member)
- Scalehordes (10 members)
- Scarlet Moon cards (14 members)
- Scharff (1 member)