This study describes the isolation and identification of Mannheimia haemolytica from the UHT milk. This is important for public health since human might get infected with this bacteria. Three package of semi-skimmed UHT drinking milk with cacao was obtained from a commercial company and analysed in a private laboratory (Istanbul, Turkey) bacteriologically. The gross apparence of the milk was not normal. It was thickened and clotted. Milk homogenates were analysed by using PCA and sheep blood agar. After Gram's staining Gram negative coccobasils were observed. Pasteurella pneumotropical Mannheimia haemolytica was identified according to the API 20E.