Barzani won a total of 68 votes while 81 lawmakers attended Tuesday's parliamentary session.
"Congratulations to the new President of the Iraqi Kurdistan Region Nechirvan Barzani. There are few more skilled and talented leaders, which the Middle East region needs at such an important time," Brett McGurk, a former US envoy in Iraq and Syria, wrote on Twitter.
The US consulate general in Erbil also congratulated the Kurdish leader and said that "we look forward to working with President Barzani over the coming four years."
The US Department of State, meanwhile, welcomed the election and praised Barzani as a "close partner."
"We've enjoyed close relationship with him [Barzani], of course... We worked with him on many important issues including regional security, economic reform and repairing relations between the KRG [Kurdistan Regional Government] and the government of Iraq. We are confident that he will remain a close partner on these priorities," US Department of State spokesperson Morgan Ortagus told reporters on Tuesday.
Andrew Murrison, British Minister of State for the Middle East, also congratulated Nechirvan Barzani in an online statement on his Twitter account.
"Congratulations to PM Barzani on his election as President of the Kurdistan Region of Iraq by the KurdistanParl. The UK looks forward to ever stronger relations with Kurdistan."
Turkish Foreign Minister Mevlut Cavusoglu offered congratulations to the Kurdish leader during a phone call on Tuesday evening, while Barzani hoped for further strengthening the bilateral ties between the sides.
Iraqi PM Adil Abdul-Mahdi held a phone call with Barzani on Tuesday and congratulated him on his election as the new President of the Kurdistan Region, hailing his role in improving the relations between Erbil and Baghdad through peaceful methods.
Iraqi Parliament Speaker Mohammad al-Halbusi, in the meantime, congratulated Barzani in a phone call while expressing his trust in the new Kurdish president.
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