3Q

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)