Eight Otago players have been named, seven in the Highlanders as well as Michael Collins, who returns for his third season with the Blues.
The most notable name among the Highlanders squad was that of Marty Banks.
The first five-eighth returns to the team after spending time in Japan.
Meanwhile former Highlanders and Otago first five-eighth and fullback Fletcher Smith was snapped up by the Hurricanes.
Blues
Forwards: Jed Brown, Blake Gibson, Akira Ioane, Dalton Papalii, Tom Robinson, Hoskins Sotutu, Jimmy Tupou, Gerard Cowley-Tuioti, Josh Goodhue, Jacob Pierce, Scott Scrafton, Patrick Tuipulotu, Leni Apisai, Alex Hodgman, Ezekiel Lindenmuth, Sione Mafileo, Matt Moulds, James Parsons, Marcel Renata, Karl Tu'inukuafe, Ofa Tu'ungafasi. Backs: Caleb Clarke, Michael Collins, Matt Duffie, Rieko Ioane, Melani Nanai, Jordan Trainor, Levi Aumua, TJ Faiane, Ma'a Nonu, Tanielu Tele'a, Sonny Bill Williams, Otere Black, Stephen Perofeta, Harry Plummer, Sam Nock, Augustine Pulu, Jonathan Ruru.
Chiefs
Forwards: Kane Hames, Aidan Ross, Reuben O’Neill, Nepo Laulala, Atu Moli, Sosefo Kautai, Angus Ta’avao, Nathan Harris, Liam Polwart, Samisoni Taukei’aho, Brodie Retallick, Tyler Ardron, Laghlan McWhannell, Michael Allardice, Fin Hoeata, Mitchell Brown, Taleni Seu, Sam Cane, Mitchell Karpik, Lachlan Boshier, Luke Jacobson, Pita Gus Sowakula. Backs: Brad Weber, Te Toiroa Tahuriorangi, Jonathan Taumateine, Damian McKenzie, Tiaan Falcon, Jack Debreczeni, Alex Nankivell, Anton Lienert-Brown, Tumua Manu, Bailyn Sullivan, Solomon Alaimalo, Sean Wainui, Ataata Moeakiola, Etene Nanai-Seturo, Shaun Stevenson, Marty McKenzie.
Hurricanes
Forwards: Heiden Bedwell-Curtis, Gareth Evans, Vaea Fifita, Sam Henwood, Du’Plessis Kirifi, Reed Prinsep, Ardie Savea, James Blackwell, Geoff Cridge, Sam Lousi, Liam Mitchell, Isaia Walker-Leawere, Fraser Armstrong, Chris Eves, Alex Fidow, Ben May, Toby Smith, Jeff To’omaga-Allen, Asafo Aumua, Dane Coles, Ricky Riccitelli Backs: Jordie Barrett, Ben Lam, Jonah Lowe, Nehe Milner-Skudder, James Marshall, Salesi Rayasi, Vince Aso, Wes Goosen, Ngani Laumape, Billy Proctor, Matt Proctor, Beauden Barrett, Jackson Garden-Bachop, Fletcher Smith, Finlay Christie, Richard Judd, TJ Perenara. Note: Peter Umaga-Jensen (Wellington) is not available due to injury.
Crusaders
Forwards: Michael Alaalatoa, Harry Allan, Scott Barrett, Ethan Blackadder, Whetukamokamo Douglas, Mitchell Dunshea, Owen Franks, Ben Funnell, Billy Harmon, Oliver Jager, Andrew Makalio, Joe Moody, Tim Perry, Kieran Read, Luke Romano, Tom Sanders, Quinten Strange, Jordan Taufua, Codie Taylor, Matt Todd, Sam Whitelock. Backs: Tim Bateman, George Bride, Brett Cameron, Ryan Crotty, Israel Dagg, Mitchell Drummond, Ereatara Enari, Braydon Ennor, Leicester Faingaanuke, Jack Goodhue, Bryn Hall, David Havili, Mitchell Hunt, Will Jordan Manasa Mataele, Richie Mo'unga, Ngane Punivai.
Highlanders
Forwards: Liam Coltman, Ash Dixon, Ray Niuia, Daniel Lienert-Brown, Josh Iosefa-Scott*, Ayden Johnstone *, Siate Tokolahi, Tyrel Lomax, Sef Fa’agase, Tom Franklin, Jackson Hemopo, Paripari Parkinson, Josh Dickson, Jack Whetton, Luke Whitelock, Liam Squire, James Lentjes, Dillon Hunt, Marino Mikaele Tu’u, Shannon Frizell, Elliot Dixon. Backs: Aaron Smith, Kayne Hammington, Folau Fakatava, Bryn Gatland, Josh Ioane, Marty Banks, Rob Thompson, Patelesio Tomkinson, Teihorangi Walden, Richard Buckman, Matt Faddes, Thomas Umaga-Jensen, Waisake Naholo, Tevita Li, Tevita Nabura , Josh McKay , Ben Smith. Unavailable due to long term injury: Aki Seiuli, Kalolo Tuiloma