Immaculate Conception Cathedral School may refer to:

• Immaculate Conception Cathedral School (Philippines) in Quezon City, Philippines
• Immaculate Conception Cathedral School in Lake Charles, Louisiana - Roman Catholic Diocese of Lake Charles
• Immaculate Conception Cathedral School (Memphis, Tennessee) in Memphis, Tennessee, United States

• Hexa-cata-benzocoronene
• Hexa-cata-hexabenzocoronene
• Hexacelsian
• Hexacentrinae
• Hexacetonide
• Hexachlamys edulis
• Hexachlormolybdate
• Hexachloroantimonate
• Hexachlorodizincate
• Hexachloro-endo-methylenetetrahydronaphthalic acid
• Hexachloroendomethylenetetrahydrophthalic acid
• Hexachordon
• Hexachord theorem
• Hexacontacarbon
• Hexacontakaitetragon
• Hexacontatetragon
• Hexacontium pachydermum
• Hexacopper bismuth triarsenate hexahydroxyl trihydrate
• Hexacopper diiron tin octasulfide
• Hexacopper(II) bismuth triarsenate hexahydroxyl trihydrate
• Hexactinosa
• Hexacylloepus
• Hexacylloepus ferrugineus
• Hexad (chord)
• Hexad (computing)