Leinster prop Nathan White will join Connacht on a three-year contract at the end of the season.
The 6'2, 118kg tight head former Waikato captain played 77 times for the 2011 ITM Cup finalists before moving to Leinster on a one-year deal last season.
The dynamic front row forward is known for his scrummaging and leadership skills.
Assistant coach Dan McFarland said: "Nathan is an exceptional scrummager and to have a player with his explosive power around the pitch opens up a huge number of opportunities for us.
"Nathan's a proven leader both on and off the pitch and I am looking forward to working with him here at Connacht."
Team manager and fellow Kiwi Tim Allnutt said: “To have someone of Nathan's calibre and work ethic joining the squad is a huge boost to the club. Ronan Loughney has been doing a superb job at tight-head this season and Nathan's signature will add an extra layer of depth to this vital position.
“With a three-year deal Nathan has shown he believes in what we are doing here and we will use his knowledge and experience to help bring through the next crop of props through our academy structures.”