We study gender differences in the evaluation of submissions to economics conferences. Using data on more than 9,000 submissions from the Annual Congress of the European Economic Association (2015-17), the Annual Meeting of the Spanish Economic Association (2012-17) and the Spring Meeting of Young Economists (2018), we find that all-female-authored papers are 3.3% points (p.p.), or 6.8%, less likely to be accepted than all-male-authored papers. The estimated gap ranges from 5.4 p.p. (95% CI: 2.5 p.p., 8.3 p.p.) to 2.9 p.p. (0 p.p., 5.8 p.p.). This gap is present after controlling for number of authors of the paper; field; referee fixed effects; cites of the paper; authors' previous publication record, affiliations, and experience; and connections between the authors of a given paper and the referees that evaluate it. We provide evidence suggesting that the gap is driven by stereotypes against female authors: it is entirely driven by male referees, only exists for lesser-known authors, and seems larger in more masculine fields, especially in finance.