The study focused on passengers preference for selected mass transit companies in South eastern Nigeria. Data were collected from 114 passengers who patronized the selected mass transit in the study area with the aid of a structured questionnaire. Data collected were analyzed using descriptive statistics such as frequency counts and percentages. The results of the study showed passengers preference for Imo Transport Company Limited, then Rivers Transport Company Limited, and then Abia Line Network Company Limited. Findings revealed that passengers were satisfied with the general quality of service, fares charged, vehicle standard, attitude of drivers and crew, and drivers' safety consciousness on the highway. Findings also revealed that vehicles were also readily available when required. Based on the findings, the following recommendations were made: Government should develop other modes of transportation to enhance proper integration of transport services in the country. The companies should open up more routes to increase extent of vehicle utilization which will result to increase in income. The government should assist the companies to improve the standard of facilities such as tarrying of parks, building of adequate passenger waiting hall and other passenger comfort facilities. More importantly, Government should improve the condition of Nigeria roads.