The study examined availability of antenatal care facilities as a factor affecting accessibility to antenatal care services among pregnant women in Internally Displaced Persons’ (IDPs) Camps in Borno State, Nigeria. Survey type of descriptive research design was adopted and the population of the study comprised pregnant women in fifteen (15) IDPs’ Camps in Maiduguri Municipal, Borno State totaling four thousand four hundred and forty (N=4,440). Simple random sampling technique was used and selected 400 respondents from six (6) selected IDPs’ Camps. The research instrument was a researcher developed structured questionnaire which was validated by experts from Physical and Health Education Department, Aminu Saleh College of Education, Azare, Bauchi State Nigeria and the reliability was ascertained using split-half method and a reliability coefficient of .84 (r = .84) was obtained. Data was collected with the help of six female research assistants. The postulated hypothesis was tested using inferential statistics of Chi- square (?2) at 0.05 alpha level of significance. The study revealed that, unavailability of antenatal health care facilities negatively affects accessibility to ANC services by pregnant women in Internally Displaced Persons’ (IDPs) Camps in Borno State, Nigeria. The study recommended that, ANC services should be available at all the times in various clinics with other consumables and emergency obstetric care in Internally Displaced Persons’ (IDPs) Camps in Borno State, Nigeria.