Chthonic (sometimes typeset ChthoniC or ChThoniC) is a Taiwanese heavy metal band, formed in 1995 in Taipei.
Chthonic (UK /ˈkθɒnɪk/, US /ˈθɒnɪk/ from Greek χθόνιος khthonios [kʰtʰónios], "in, under, or beneath the earth", from χθών khthōn "earth") literally means "subterranean".
Chtouka Aït Baha is a province in the Moroccan economic region of Souss-Massa. Its population in 2004 was 297,245. 
Chthon is a fictional character, a demonic Elder God appearing in American comic books published by Marvel Comics.
Chthonius is a genus of psudoscorpions.
Chromosome transmission fidelity protein 18 homolog is a protein that in humans is encoded by the CHTF18 gene.
Chthamalus stellatus, common name Poli's stellate barnacle, is a species of acorn barnacle common on rocky shores in South West England, Ireland, and Southern Europe.
Chthonerpeton is a genus of semiaquatic amphibians in the family Typhlonectidae containing these species:
CHTG-FM is a Canadian radio station being licensed to Haldimand, Ontario serving the Hamilton region broadcasting at 92.9 FM with a classic hits format branded as 92.9 The Grand.
Chtylok the Che-K'n Kau is a fictional character appearing in American comic books published by Marvel Comics.