The pseudonym of Sir Arthur Quiller-Couch / (followed by an ayah (verse) number) Quran

question or questions / quarter / (electronics) Quality factor / (astronomy) quasar / (sports) qualified / American Library Association abbreviation of quarto (“book size”). / (chess) queen

The ordinal number seventeenth, derived from this letter of the English alphabet, called cue and written in the Latin script.

(slang) a gadget master, gadget creator

Alternative spelling of Q and A

plural of Q and A

plural of Q & A

(QAnon) A hypothetical individual believed to be in charge of QAnon, most commonly thought to be Donald Trump himself.

A probability plot, which is a graphical method for comparing two probability distributions by plotting their quantiles against each other.

plural of Q-Q plot