In this study, by thermophilic Campylobacters were isolated and identified from bacteriological meat samples belong to a total of 100 cattle samples taken from a slaughterhouse in Ankara between the date of September 2000 to February 2001, it was aimed to determine the incidence and the distribution of biotypes of Campylobacters and the potential risk of contamination in human health. It was used the method adviced from Food and Drug Administration (FDA) in the isolation and identification of thermophilic Campylobacters. According to the analysis result of 8 bacteriological meat samples taken from each of 100 cattle, thermophilic Campylobacter species were isolated from 65 cattle (65 %). C. jejuni was found to be the predominant species in 60 out of 65 cattle (92.30 %) whereas C. coli in 4 (6.15 %), C. lari in 1 (1.53 %) cattle. It was formed that C. jejuni biotype 1 at 51.19 %, C. jejuni biotype 2 at 35.71 %, C. jejuni biotype 3 at 7.14 %, C. coli biotype 1 and 2 at 2.38 % and C. lari biotype 1 at 1.19 % from isolated. As a conclusion; Campylobacter was isolated and identified at higher level bacteriological meat inspection samples of slaughtering cattle. Therefore, slaughtering hygiene, continumity of cold-chain, prevent the cross-contamination and personel training in establishments were previously considered that prevent the public health problems, caused Campylobacter.