Provided are a terminal position assurance and a connector, which belong to the technical field of connectors. The terminal position assurance includes a positioning body, an upper-row snap, a limiting member, and a lower-row snap. The positioning body extends along a first direction. Two upper-row snaps are provided, fixedly connected to the positioning body separately, and disposed opposite to each other. The limiting member is connected to one side of the positioning body and extends along a second direction which is perpendicular to the first direction. Two lower-row snaps are provided, fixedly connected to the limiting member separately, and disposed opposite to each other.