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Genetic factors contribute to the risk for developing alcohol use disorder (AUD). In collaboration with the genetics company 23andMe, Inc., we performed a genome‐wide association study of the alcohol use disorder identification test (AUDIT), an instrument designed to screen for alcohol misuse over the past year. Our final sample consisted of 20 328 research participants of European ancestry (55.3% females; mean age = 53.8, SD = 16.1) who reported ever using alcohol. Our results showed that the ‘chip‐heritability’ of AUDIT score, when treated as a continuous phenotype, was 12%. No loci reached genome‐wide significance. The gene ADH1C, which has been previously implicated in AUD, was among our most significant associations (4.4 × 10⁻⁷; rs141973904). We also detected a suggestive association on chromosome 1 (2.1 × 10⁻⁷; rs182344113) near the gene KCNJ9, which has been implicated in mouse …