A screwless mini fan holder is disclosed. The mount bracket of the fan holder is composed of two clips and four resilient pins projecting from opposite sides of a backplane. The clips are used to couple the fan holder onto the heat sink of a computer. The resilient pins each having a semi-circular ball head are used to attach the mini fan, where one end of each pin is permanently connected to the back side of the backplane, and the other end extends outward at an inclined angle. Such screwless design enables the fan holder without using any mechanical tools. This not only simplifies the assembly of the mini fan in a computer for most computer users, but also allows air flow to be uniformly distributed over the heat sink for maximized heat dissipation.