The purposes of this study are to describe intimate partner violence (IPV) among pregnant women in Thailand and compare maternal characteristics, health practices during pregnancy, and maternal health between abused and nonabused pregnant women. Of 475 pregnant Thai women, 13.1% report ever being abused, whereas 4.8% report physical abuse during pregnancy. Women abused during pregnancy, compared to nonabused women, are more likely to be younger, unmarried, have low income, be unemployed, and report that the pregnancy was unwanted. They also report lower levels of positive health practices and higher levels of depressive symptoms. Results demonstrate a need for screening of IPV among pregnant Thai women.