Who invented the first bass pick?

The first bass pick is credited to John Entwistle, the bassist of The Who, who is often recognized for popularizing its use in the 1960s. However, the concept of using a pick for string instruments predates him, as picks have been used for various stringed instruments for centuries. The specific design and material of bass picks have evolved over time, but Entwistle's influence helped solidify their place in bass playing.