Teams will represent their iwi or waka at the nationals and can compete in the men's, women's, mixed and Special Olympics grades or age-group grades (9-and-under, 11-and-under, under-13, under-15, and under-17).
Te Arawa will be well represented with 15 teams, while Waikato Tainui is bringing over the biggest contingent with 23 teams.
Pene said the Special Olympics division was a new and welcome addition this year.
She said no South Island teams were entered but teams were coming from all over the North Island.
The defending champions in the men's division are Waikato and the defending champions in the women's division are Waitakere.
Pene said Rotorua had won the rights to host the national event for three years.
"The inaugural event was last year so we have it this year and we are suppose to have it for three years and then it goes out for tender."
She said a pohiri would be held at 7.30am on Thursday with games starting at 8.30am on all three days and running until late. An awards' ceremony and cultural night will also be on Saturday night.
All seven courts at the Energy Events Centre will be used this week.