XX
XX is:
- Abbreviation for a plane crystallographic group in crystals
- Abbreviation for female-specific chromosome pair xx, see X - chromosome
- The Roman numeral for 20
- Abbreviation for bi- exciton
- Dos Equis, a beer brand Cerveceria Cuauhtemoc Moctezuma Mexican brewer
XX as distinguishing signs on license plate:
- Greece: Athens, kept for future approvals
- Norway: Mosjøen in the province of Nordland
- Czech Republic: members of the technical staff of diplomatic missions
Xx is:
- An abbreviation for the Zweitchargierten a fraternity
- The name for the Thoroughbred ( racehorse, galloping type )
- A name for the British band The xx and the name of their debut album, see xx ( album )
- Disambiguation
- Abbreviation