Patient advocacy organizations (PAOs) are nonprofits dedicated to benefiting patients and their families through activities such as education/counseling and research funding. Although medical drug/device companies may serve as important partners, industry donations may bias the efforts of PAOs. We conducted a retrospective cross-sectional analysis of the Kaiser Health News nonprofit database to identify and characterize otolaryngologic PAOs (n = 32) active in 2016. Among these PAOs, half (n = 16, 50.0%) focused on otologic diseases, and mean total annual revenue was $3.1 million. Among the 15 PAOs (46.9%) with publicly available donor lists, 10 (66.7%) received donations from industry. Few PAOs publicly reported the total amount donated by industry (n = 3, 9.4%) or published policies for mitigating potential financial conflicts of interest with donors (n = 3, 9.4%). Requiring drug and device companies to publicly report donations to PAOs may help patients, providers, and policy makers to better understand advocacy by these influential stakeholders.