As they respond to the COVID-19 pandemic, countries worldwide have increasingly looked to digital technologies in support of public health measures for contact tracing. Digital proximity tracing, an approach that typically use smartphones or purpose-built devices to capture anonymized interactions between individuals and subsequently issue alerts, has shown promise in contributing to national contact tracing strategies. However, given that digital proximity tracing is still an emerging technology, methods for assessing and monitoring its effectiveness remain unclear. This document therefore seeks to provide national public health authorities with a list of indicators, developed in consultation with a broad range of national and regional stakeholders, that can be used as a basis for a standardized evaluation of the public health effectiveness of digital proximity tracing.