The organisation's chief executive, Stephen England-Hall, said each market would resume activity in a way that was ''appropriate to their audience'' and circumstances.
Tourism NZ's key markets include Australia, China, Britain, the United States, Germany and Japan.
''New Zealanders' response to the attacks demonstrated what is unique and special about New Zealand – our people and our values,'' said England-Hall.
The country had been credited for its reaction and he said there had not been any significant impact on the sector as a result of the attack, which killed 50 people.
It would continue to assess visitor numbers, which have been running at a record high - beyond 3.8 million a year.
''This is of course something that will continue to be monitored and something that the sector has an important role to play in over the coming months. We look forward, more than ever, to proudly showcasing New Zealand, our people and our warm welcome on the global stage."
Tourism NZ says it consulted widely with the tourism industry, and says the response was overwhelmingly positive and supportive.
Air New Zealand has also paused its Facebook advertising and has yet to resume.