Effects of different types and levels of organic manures on the yield and yield components of garlic (ex-Kofa var) was investigated. Two experiments were conducted under irrigation at the Institute for Agriculture Research (I.A.R) Kadawa in the Sudan Savanna zone of Nigeria during 2007/2008 and 2008/2009 (Nov-Mar) dry seasons. The treatments consisted of five levels (0, 2.5, 5.0, 7.5 and 10.0 tons/ha) of three types of organic manures (poultry droppings (P.D), farm yard manure (FYM) and cow dung (CD) laid out in a Randomized Complete Block Design (RCBD) with four replications. Yield parameters studied included cured bulb weight , average bulb diameter, average number of cloves/bulb, average weight of cloves and cured bulb yield (kg/ha). The results showed Significant (P=0.5) effect of all organic manures with highest yield values obtained from poultry droppings, then cow dung and farmyard manure respectively. Increasing levels of all applied manures from 0-10 tons/ha significantly increased all yield parameters assessed. Thus for optimum yield of garlic at Kadawa, the use of 7.5-10 tons/ha of poultry dropping could be recommended.