The Tracking Indicator Definitions document provides the definitions and methodologies for the tracking indicators of the Asian Development Bank (ADB) Corporate Results Framework, 2019–2024. While not formally part of the framework, tracking indicators enable ADB to systematically measure its performance with a rich set of information. The primary purpose of tracking indicators is to track progress in areas of interest rather than measure against a prespecified target level. Definitions of the results framework indicators are included in a separate note. This guidance is for use by ADB staff. It will be updated as necessary to reflect good practices and lessons learned.