Vietnam transport minister Dinh La Thang has banned officials from playing golf, saying they are spending too much time on the fairway and not enough on their jobs.
A notice on the ministry's website accused some officials of not actively directing or administering their work, leading to the slow handling of affairs.
The ban also reportedly includes executives of companies working under contract to his ministry.
The BBC says golf was once considered a bourgeois activity by the Communist authorities in Vietnam.
However, its popularity has surged among a rapidly growing middle class.