We determined the knowledge of, attitude to and practice of contraception and the associated sociodemographic factors among a representative sample 1130 Qatari married women aged 18–49 years. Data were collected by questionnaire. The mean age of the women was 32.5 (SD 7.6) years. The vast majority (94.6%) knew about contraception but of these 1070, only 694 (64.9%) were in favour of contraception. Knowledge of contraception increased with increasing level of education (P < 0.001), but decreased the lower the household income (P = 0.002). Only 511 (47.8%) women were currently using contraceptives, which was significantly associated with age, husband’s age, years of marriage, education level, income level and attitude to family planning. The most commonly known and used contraceptives were intrauterine device and pills. Friends were the most common source of knowledge about family planning method (80.0%).