Jones, 53, was voted on to the NZR Board of Directors after being nominated by the Tasman Rugby Football Union.
The 55-Test cap former All Black headed off Dame Annette King in replacing outgoing member Glenn Wahlstrom on the 12-person Board.
NZR Chair Brent Impey said Jones would add considerable mana, knowledge and expertise to the table.
"Sir Michael has already made an immense contribution to New Zealand rugby both as a player at every level, and as a leader in the community.
"His ability to bring people together, to understand different perspectives and different cultures, and to lead through his own actions will be a valuable addition."
Jones received a New Zealand Medal for service to the Pacific Island community in 1997 and was knighted last year for his work in driving economic and social development for Pasifika people in New Zealand, and in the Pacific region.
He is the Chair of the Village Community and Youth Trust, which opened in 2003 to keep young Pacific and Maori people out of gang activity. And in 2010, set up the Village Sports Academy to mentor Pacific students to stay in school.
Jones, who holds the Samoan matai chief titles of Savae and Laauli, and played 74 matches for the All Blacks between 1987 and 1998, including 55 Test matches, said he was humbled by the new role.
"I have been fortunate throughout my life to be involved in rugby which has given me a lot. I am very humbled and privileged to have been elected on to the NZR Board, and I am looking forward to giving back to the game in this capacity," Jones said.