Contraceptive education is generally considered a standard component of postpartum care, but the effectiveness is seldom examined. Two-thirds of postpartum women may have unmet needs for contraception, and many adolescents become pregnant again within a year of giving birth. Women may prefer to discuss contraception prenatally or after hospital discharge. The objective of this systematic review was to assess the effects of educational interventions for postpartum mothers about contraceptive use. We searched computerized databases for randomized controlled trials that evaluated the effectiveness of postpartum contraceptive education. The intervention must have started within 1 month after delivery. The Mantel-Haenszel odds ratio was calculated with 95% confidence interval for the dichotomous outcomes. Eight trials met the inclusion criteria. Of 4 short-term interventions, 1 did not have sufficient data and 1 was statistically underpowered. The remaining 2 showed a positive effect on contraceptive use. Of 4 multifaceted programs, 2 showed fewer pregnancies or births among adolescents in the experimental group that had enhanced services, and 1 structured home-visiting program showed more contraceptive use. The effective interventions were conducted in Australia, Nepal, Pakistan, and the United States. Postpartum education about contraception led to more contraception use and fewer unplanned pregnancies. Short-term interventions were limited by self-reported outcomes or showing no effect for many comparisons. The longer-term programs were promising and not necessarily more costly than usual care. Health care providers can determine if 1 of these interventions suits their setting and level of resources. Target Audience: Obstetricians & Gynecologist, Family Physicians Learning Objectives: After completing this educational activity, the participant should be better able to assess the importance of assessing delivery methods when examining intervention quality, evaluate the evidence from randomized trials on the effectiveness of postpartum education, and employ why additional research on postpartum education is needed for improving clinical practice.