Fans and celebrity alike took to Twitter and other social media platforms to relive the 73-year-old superstar's best moments in the film industry as well as the good things to come following this special day.
Prime Minister Narendra Modi also greeted Bollywood's megastar Amitabh Bachchan on his 74th birthday.
"Dear SrBachchan (Amitabh Bachchan), wishing you a very happy birthday. Your versatility and humility has many admirers. Praying for your long and healthy life," Modi tweeted.
One well wisher tweeted "#HappyBirthdayAmitabhBachchan. Let's start the day with a love song of @SrBachchan" along with the popular romantic song from the movie from 1981, 'Silsila' titled 'Dekha Ek Khwab To Yeh Silsile Hue.'
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"Bollywood is famous today because of this two @iamsrk @SrBachchan. #HappyBirthdayAmitabhBachchan," another tweeted with a picture of Bachchan alongside Shah Rukh Khan.
Here are some other tweets from the fans of the 'Zanjeer' star:
Not long after the clock marked the actor's birthday, #HappyBirthdayAmitabhBachchan began trending on Twitter in India.
The early 1970s witnessed Bachchan's stardom for his hit movies like 'Deewar' and 'Sholay' among many others. He was dubbed India's first 'angry young man' for his on-screen roles.
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Referred to as the'Shahenshah of Bollywood' and 'Star of the Millennium', Big B has since appeared in over 180 Indian films in a career spanning more than four decades.
ANI