A neutral pion, denoted as π^0, is a type of meson that consists of two quarks. The quark composition of a neutral pion is a quark-antiquark pair. Specifically, it is composed of an up quark (u) and an anti-up quark (u̅). The up quark has a charge of +2/3e, while the anti-up quark has a charge of -2/3e, where e represents the elementary charge. The combined charges of the quark and antiquark cancel each other out, resulting in a neutral overall charge for the pion.