PurposeThis paper aims to examine the levels of integrated reporting disclosure alignment in annual reports by listed firms in Vietnam and the factors influencing these disclosure levels.Design/methodology/approachDrawing on a sample of 200 listed firms in Vietnam in 2017, the authors constructed a disclosure index based on the content of the International Integrated Reporting Committee (IIRC) Framework. Using this index, the study measures the extent to which Vietnamese listed firms’ annual reports include the content elements required by the integrated reporting (IR) Framework. The study performs ordinary least square regression to investigate the influencing factors.FindingsThe study documents that, on average, Vietnamese listed firms disclose about 43% of the information required by the IIRC Framework. The disclosure levels are positively associated with manufacturing firms, board independence, foreign ownership, government ownership, audit quality and firm size.Originality/valueIntegrated reports have been widely adopted in many countries, but it is still a new issue in Vietnam. This is the first paper providing some insights into the inclusion of the content elements required by the IR Framework by listed firms in Vietnam. It also contributes to the disclosure literature by providing empirical evidence on the factors influencing these disclosure levels. Deriving from the findings, the authors offer recommendations for policymakers on the issue of regulating and implementing IR in Vietnam.