5Q

5Q or 5-Q may refer to:


 * 5Q, IATA code for Holiday Europe
 * 5Q, former IATA code for Best Air
 * 5Q, former IATA code for Euroceltic Airways
 * 5q, an arm of Chromosome 5 (human)
 * Chromosome 5q deletion syndrome
 * 5q- syndrome; see Myelodysplastic syndrome
 * AD-5Q, a model of Douglas A-1 Skyraider
 * 5Q, designation for one of the Qumran Caves
 * MD 5Q, a section of Maryland Route 5
 * 5Q, the production code for the 1980 Doctor Who serial Meglos