To understand the relationship between the COVID-19 pandemic and menstrual hygiene management (MHM) among adolescent girls in Ethiopia and to explore which girls were most affected by pandemic disruptions.

Two rounds of data from surveys and interviews were collected with adolescent girls immediately prior to and during the COVID-19 pandemic. The primary analysis is cross-sectional, controlling for pre-COVID-19 covariates.

The setting was three zones in two regions of Ethiopia: East Hararghe and East Shewa Zones in Oromia and South Gondar Zone in Amhara. Data were collected in December 2019–March 2020 and September 2020–February 2021.

742 adolescent girls, ages 11–25 years.

Four primary outcomes were explored (1) the number of challenges girls experienced; (2) adolescent-identified challenges managing menstrual hygiene; (3) adolescent-identified difficulties accessing MHM products and (4) adolescent-identified difficulties accessing soap or water.

Girls who were more vulnerable to COVID-19 were more likely to have worse MHM outcomes. An SD increase in household vulnerability to COVID-19 was associated with an 8.7 percentage point increase in the likelihood that the respondent had difficulty getting MHM products (p

The results of this study suggest that MHM was left behind in the COVID-19 response. New programming and policy interventions need to address financial hardship and disruptions to supplies to manage menstruation as well as tackle the inequitable gender norms that stigmatise menstruation during emergencies.