**Carpus of Antioch** (Greek: Κάρπος) was an ancient Greek mathematician. It is not certain when he lived; he may have lived any time between the 2nd century BC and the 2nd century AD. He wrote on mechanics, astronomy, and geometry. Proclus quotes from an *Astronomical Treatise* by Carpus concerning whether problems should come before theorems, in which Carpus may (or may not) have been criticising Geminus.^{[1]} Proclus also quotes the view of Carpus that "an angle is a quantity, namely a distance between the lines of surfaces containing it."^{[2]} According to Pappus, Carpus made use of mathematics for practical applications.^{[3]} According to Iamblichus, Carpus also constructed a curve for the purpose of squaring the circle, which he calls a curve generated by a double motion.^{[4]}