Here is what they have to say:
Bipasha Basu: My birthday has just gone…now it is Hrithik, fellow Capricorn, so ya Happy Birthday.
Sonu Niigaam: Hrithik Roshan is one of the most handsome men in the world and very talented. Wishing him a very Happy Birthday.
Sonal Chauhan: I would like to wish a very Happy Birthday and I hope this year is fantastic for him and his films are a super hit and I am really looking forward to "Agneepath".
Arjun Rampal: Hrithik we love you. You have become so fit and you are an inspiration for all of us, have a superb year.
Asmit Patel: He is one of my initial inspirations to come into Bollywood. He’s a fellow Capricorn. My birthday is after three days. He is very hard working. I wish him a very Happy birthday.
Asin Thottumkal: I wish him a very Happy Birthday and a great year ahead and a great life ahead.
After "Agneepath", Hrithik will be seen in "Krrish 2" alongside Priyanka Chopra, Kangana Ranaut and Vivek Oberoi. Some of his friends took to twitter to wish him.
Preity Zinta: Happy Birthday to my dearest, hottest and sweetest friend with the nicest heart!!! Love you… Have a Rocking 2012.
Farhan Akhtar: Happy birthday @iHrithik. Wish you a Super-heroic year.
Vivek Oberoi: Hrithik happy birthday bro! hope u have a great one.
Abhishek Bachchan: Happy birthday @iHrithik have a great year brobraz!!!