President John Magufuli of Tanzania posted his congratulatory message on his Twitter handle.
The Kenya Diaspora Alliance (KDA) also sent a congratulatory message to Mr Kenyatta.
Transport Cabinet Secretary James Macharia also congratulated Mr Kenyatta.
East Africa Heads of State were the first to congratulate President Uhuru Kenyatta on his re-election.
In his congratulatory message, President Yoweri Museveni of Uganda rooted for Kenya’s cooperation in developing the region.
He said the re-election was a testament that his development in the country and the region in the last five years was appreciated by the voters.
“As you embark on your new term of office, I am confident that you will continue with these efforts and the important task of promoting the unity and development of your people. Under your leadership, Kenya has continued to be a key regional economic, peace and security partner,” said President Museveni.
“I, therefore, look forward to continue working with you to strengthen further the brotherly relations and cooperation between our two countries, as well as other EAC (East African Community) partner states in the quest to develop our region.”
President John Magufuli of Tanzania posted his congratulatory message on his Twitter handle wishing Mr Kenyatta success.
“Nakupongeza Ndugu Uhuru Kenyatta kwa kuchaguliwa kuwa Rais wa Kenya kwa kipindi kingine. Nakutakia mafanikio mema (I congratulate you my brother Uhuru Kenyatta upon your re-election as President of Kenya for another term. I wish you success),” he wrote.
In his message, President Paul Kagame of Rwanda called for entrenched development in the region.
“Congratulations my brother @UKenyatta for a successful election and the trust Kenyans have placed in you!” he wrote on Twitter
“@UKenyatta Pamoja tuzidi kujenga umoja na maendeleo ya mataifa na jumuiya yetu (Together let’s forge unity and development for our region).”