Kenya's world 400m hurdles champion Nicholas Bett was a surprise inclusion in the 50-strong squad selected after the team trials at Eldoret's Kipchoge Keino stadium on Friday.
Bett, who became the first Kenyan athlete to win a world title in the sprints at the Beijing World championship last August, missed the trials held in Eldoret for the first time.
In a family twist, his twin brother Aron Koech breezed to victory in the 400m hurdles race, but he was disqualified for stepping on the outside lane.
Koech was however also named into the Olympic team and will compete alongside his brother in Rio.
Kenya Olympic team:
Women
400m Hurdles: Maureen Jelagat
400m:Maureen Jelagat, Margaret nyairera Wambui
800m: Margaret nyairera wambui, Eunice Sum, Winnie Chebet,
1500m: Faith Chepngetich, Nancy Chepkwemoi. Viola Lagat
3000m S/Chase: Hyvin Kiyeng, Beatrice Chepkoech, Lydia Rotich
5000m: Vivian Cheruiyot, Hellen Obiri, Mercy Cherono
10000m: Vivian Cheruiyot, Betsy saina, Alice Aprot
Marathon:Jemima Sumgong, Helah Kiprop, Visline Jepkesho
20km Walk: Grace Wanjiru
Men
200m: Kevin Nkanata, Mike Mokamba
400m Hurdles: Nicholas Bett, Boniface Mucheru, Aron Koech
400m: Alphas Kishoyan, Raymond Kibet, Alex Sampao, Boniface Mweresa
800m: Alfred Kipketer, Ferguson Rotich, David Rudisha
1500m: Asbel Kiprop, Elijah Manangoi, Ronald Kwemoi
3000m S/Chase: Brimin Kipruto, Conceslus Kipruto, Ezekiel Kemboi
5000m: Caleb Mwangangi Ndiku, Isaiah Kiplangat Koech
10000m: Paul Tanui, Charles Yosei, Geoffrey Kamworor, Bedan Karoki
Marathon: Eliud Kipchoge, Stanley Biwott, Wesley Korir
Javelin: Julius Yego
20km Walk: Samuel Gathimba, Simon Wachira
High Jump: Mathew Sawe