A dual condiment grinder contains: a body, a transmitting mechanism, a covering assembly, and a grinding mechanism. The body includes a first chamber and a second chamber, the grinding mechanism includes a first transmission column and a second transmission column. The covering assembly includes an inner cover and an outer cover. The body includes a first retaining recess and a second retaining recess. The transmitting mechanism includes a holder, a pressing member, a rotary shaft, a main gear, a left gear, a right gear, a first transmission gear, and a second transmitting gear. The main gear does not mesh with the left gear and the right gear, the first transmission gear does not mesh with the second transmitting gear, and the first transmission gear and the second transmitting gear mesh with the main gear respectively, such that two different ingredients are ground in the first chamber and the second chamber.