The following categories exist on the wiki, and may or may not be unused. Also see wanted categories.
- Kobold accessories (1 member)
- Kobold accessories in Suikoden (0 members)
- Kobolds (8 members)
- Konrad (1 member)
- Kooluk Empire cards (2 members)
- Koroku (1 member)
- Krakens (3 members)
- Kuromimi (1 member)
- Kwanda Rosman (1 member)
- Kyle (2 members)
- Kyril (4 members)
- LaTiDo (1 member)
- Lance (1 member)
- Languages and scripts (2 members)
- Lao-Kwan (1 member)
- Laquila (1 member)
- Laskaris Liuis (1 member)
- Lathilda (1 member)
- Leader cards (350 members)
- Leknaat (4 members)
- Lelei (1 member)
- Len-Lien (1 member)
- Lena Suphina (2 members)
- Leo Galan (2 members)
- Lepant (2 members)
- Levi (1 member)
- Liberation Army cards (20 members)
- License templates (3 members)
- Light armor (2 members)
- Light armor in Suikoden (0 members)
- Light armor in Suikoden II (0 members)
- Light novel releases (2 members)
- Lilan (1 member)
- Lilen (1 member)
- Lilin (1 member)
- Lilly Pendragon (1 member)
- Lilon (1 member)
- Liloon (1 member)
- Linfa (1 member)
- Lino En Kuldes (1 member)
- Liu (1 member)
- Liu Mei (2 members)
- Lizards (5 members)
- Lo Fong (1 member)
- Lo Hak (1 member)
- Lo Seng (1 member)
- Lo Wen (1 member)
- Locations (223 members)
- Locations from Suikoden publications (5 members)
- Locations in Genso Suikoden Card Stories (10 members)