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Technology is deeply embedded in daily life; thus, more pregnant women seek information through the Internet and incorporate the use of technological devices during their pregnancies. This systematic review aimed to examine to what extent and how technology-supported interventions were developed and delivered to pregnant women, as well as intervention effects on the targeted outcomes. Electronic data were collected from MEDLINE, CINAHL, and Scopus. Among the 11 selected studies, most were pilot studies to test the feasibility, acceptability, or preliminary effects of technology-supported interventions. The studies included both women with healthy pregnancies and pregnancies complicated by factors including preterm labor, smoking, and alcohol abuse. Most were conducted in the US, and most participants were white or African American. Interventions were primarily developed by research teams and focused on mental health issues including depression, anxiety, and stress. Interventions incorporated the use of technology including computers, mobile phones, and audiovisual aids. The overall interventions were reported to be feasible, acceptable, and beneficial in all the selected studies. Based on the review of literature, suggestions were provided for future research including the need for careful selection of intervention topics and objectives to target women who can benefit more from technology-supported interventions.