The Administrative Decisions Tribunal decided the name "Australian Vaccination Network" (AVN) was likely to mislead an ordinary member of the public into thinking it provided comprehensive information about vaccination.
The victory is the end of long-running legal battles between the AVN and various arms of the NSW government as they have sought to prevent it from spreading misinformation about vaccines.
NSW Fair Trading Minister Anthony Roberts welcomed the result.
"This is about being open and upfront about what you stand for, not hiding behind a name which could mislead the community about a very significant public health issue," he said. "The time has come for AVN to find a name which reflects its anti-vaccination stance."