Pseudispa sinuata is a species of beetle of the family Chrysomelidae. It is found in Mexico (Oaxaca), Costa Rica and Panama.
Adults reach a length of about 3.1-4 mm. They are metallic green, both the elytra and pronotum with yellowish margins. The antennae are partly brown, yellow and black, while the legs are mostly brown.
No host plant has been documented for this species.
The species name is derived from Latin sinuatus (meaning bend or curve) and refers to the sinuate lateral margins of the pronotum.