Background: The primary objective was to estimate the lifetime prevalence of abortion and the secondary objective was to describe the use of contraceptive methods among female sex workers (FSW) in Bogota, Colombia. Study Design: A cross-sectional survey was conducted among FSW. Information on sociodemographic characteristics, contraceptive methods, number of abortions, reasons for abortions and sexual practices was collected. Results: A total of 514 FSW were enrolled. Of these, 264 (53%) had a lifetime abortion. Age, years in sex work and a previous sexually transmitted infection were associated with abortion. A total of 89 FSW(17%) reported no contraception method. Oral contraceptives, use of condoms, female sterilization and intrauterine device insertion were the most common methods of contraception. Women who were poorer, who initiated sex work at a younger age and who reported use of illegal drugs were associated with inconsistent contraception. Conclusion: A high lifetime prevalence of abortion and inconsistent contraception was found among FSW in Bogota. There is a need for effective and practical contraceptive methods of family health planning among FSW in Colombia.