3Q or 3-Q may refer to:
3Q, IATA airline code for China Yunnan Airlines The third quarter of a fiscal year The third quarter of a calendar year 3Q, designation for one of the Qumran Caves 3Q (san Q), an informal slang used in both Mandarin and Japanese to express gratitude, is a phonetic representation of the English phrase "Thank you." 3q, an arm of Chromosome 3 (human)
See also Q3 (disambiguation)