Lovecraft's works

Entities

Azathoth
Bokrug
Cthulhu
Hastur
Hypnos
Nodens
Nyarlathotep
Shub-Niggurath
Yog-Sothoth

Planets

Kath
Stronti
Yaddith
Yuggoth

Cities and places

Aira
Arinuria
Cathuria
Celephais
Cytharion
Drinen
Eryx
Hatheg
Ilarnek
Jaren
Kadath
Kadatheron
Karthia
Kra
Leng
Lomar
Narthos
Nir
Nithra
Olathoe
Oonai
R'Lyeh
Sarnath
Serannian
Sidrak
Sinara
Stethelos
Sona-Nyl
Teloe
Teloth
Thalarion
Thraa
Ulthar
Zakarion
Xari

Other

Iranon (Dreamland(?) wanderer)
Shoggoth (Bio-engineered slave race)
Kuranes (Dreamland king)
Zkauba (sorcerer from Yaddith)