A fan clamp is provided for supporting a fan on a support surface by clamping to the support surface. The fan clamp includes a clamp assembly having an upper clamp member for engaging a top side of the support surface, a lower clamp member for engaging a bottom side of the support surface and a screw adjustment assembly extending through the lower and upper clamp members for clamping the upper clamp assembly and lower clamp assembly to the support surface. The clamp assembly further includes a shield extending from the lower clamp assembly through the upper clamp assembly that partially surrounds the screw adjustment assembly to block the screw adjustment assembly from being visible when the lower and upper clamp assemblies move away from each other to engage a support surface. The fan clamp may further include an arm extending from the clamp assembly for supporting the fan. The arm may be a swing arm that is rotativity connected to the fan clamp.