Diversity among healthcare teams enhances team function and improves the quality of patient care and outcomes. Women and racial minorities are historically underrepresented in medicine. However, the representation of gender and racial or ethnic groups in academic obstetrics and gynecology in the United States has not been described in recent years. This study aimed to describe the recent state and trends in gender and racial or ethnic disparities in academic obstetrics and gynecology. Data from the Association of American Medical Colleges between 2007 and 2018 were analyzed to describe the trends in the representation of women and racial (white, Asian, black) or ethnic (Hispanic) groups. The 12-year trends in representation by academic ranks (all academic physicians, full professor, associate professor, instructor), leadership positions (chairperson), and tenure (not on track for tenure, on track for tenure, or tenured) were depicted. The 12-year trends were assessed using linear regression to determine whether the slope depicting the change in representation of each group from 2007 to 2018 was significantly nonzero. In addition, average representation of each group across the 12-year period was compared using a Student t test (for gender) or analysis of variance (for race and ethnicity). In 2018, there were 152 institutions and 6302 academic physicians included in the data set. On average across the 12-year period, academic physicians in obstetrics and gynecology were 43% male, 57% female, 68% white, 12% Asian, 8% black, and 5% Hispanic. Across the 12-year period, there was an increase in the total number of physicians from 4755 to 6302 (+166 per year; 95% confidence interval, 146-186; P<.0001), a 15% increase in the proportion of women (+1.38% per year; 95% confidence interval, 1.08%-1.68%; P<.0001), and an increase in the proportion of physicians from racial minorities (Asian,+0.11% per year; 95% confidence interval, 0.08-0.15; P<.0001; black,+0.07% per year; 95% confidence interval, 0.04-0.09; P=.0002; Hispanic,+0.06% per year; 95% confidence interval, 0.02-0.1; P=.0039). There was a greater proportion of white physicians in higher academic ranks (eg, full professor), leadership positions (eg, chairperson), and tenure than the proportion of white physicians overall, whereas the opposite was true for black and Hispanic physicians. Although women now make up 64% of all academic physicians in obstetrics and gynecology, there remains a far higher proportion of males in leadership positions (chairperson) and higher academic ranks (full professor). Similarly, a greater proportion of males were tenured than females. Across the 12-year period, the representation of women and racial minorities has increased in academic obstetrics and gynecology in the United States. There is now a predominance of women, but there remains a trend for a predominance of white and male physicians in higher academic ranks, leadership positions, and tenure. It will be important to assess how these groups are represented in the coming years as the changing demographics of incoming cohorts progress through their careers to more senior positions. Promoting diversity in medical schools, leadership positions, and higher academic ranks may be an important area of focus.