President Uhuru Kenyatta will receive a honorary doctorate from the University.
The name of Mr Ruto is missing on the graduation list, despite his promise in June, this year that he would be graduating in December.
However, Kimuyu Maingi and Njeru Mugambi who also studied plant ecology like the DP will graduate with doctorate degrees in the School of Biological Sciences.
During the graduation, a total of 53 students will be awarded with doctorate of philosophy degrees.
Coalition for Reforms and Democracy (Cord) co-principal Kalonzo Musyoka will graduate with a masters in law.
Mr Ruto’s doctorate thesis is centred on the impact of human activity on riparian reserves at Saiwa Swamp in Trans Nzoia County.
“I’ve finished the data collection and analysis. Now I’m on the write-up,” the deputy president told the Nation in June.
On Friday, 474 students will get diploma’s, 4,946 will get bachelors degree, 2316 will get masters and one will get honorary.
On Thursday, Mr Ruto tweeted: “As a PhD student, I have subjected myself to that standard. I was due to graduate tomorrow but I can’t because of requirements.”
“I urge all colleges to observe set standards and award certificates to students purely on merit,” he said on his twitter page.