Arfin was given the winner's trophy along with a cash prize of Rs 10 lakh by actress Sonakshi Sinha and singers Kanika Kapoor and Shekhar Ravjiani. Priya Malik and Riya Bhattacharya were named first and second runners-up.
"I am on cloud nine. The feeling of winning the trophy of 'Om Shanti Om' has not sunk in yet. This is one of the best moments of my life. I am thankful for this platform," Arfin said in a statement.
"I am indebted to the viewers for their constant love. I pray that my journey of becoming India's best playback singer starts on a bright note," he added.
Talking about the winner, Sonakshi said: "Arfin Rana Mir is a well-deserved winner of 'Om Shanti Om'. He does complete justice to the title. Every week, I would wait for his performance as he sang all the songs with so much of 'jashan'. I wish him all the very best for a melodious and bright future."
Yoga guru Baba Ramdev, who featured as Maha Guru on the show, said: "Like 'Om Shanti Om', in the future we aim to create (more) such effective shows that will use bhajans (devotional songs) as a way to connect to the younger generation with Indian culture and traditions. My heartfelt congratulations to Arfin and best wishes for his bright future."