Here's what the celebs tweeted:
Amitabh Bachchan wrote, "T 2594 - Watching Republic Day Parade in Delhi .. what a moment of pride .. tears welling up as the Army marches past .. memories of the early years in Delhi, when we would clamour for seats to watch the parade ! JAI HIND !!".
Actor Riteish Deshmukh wrote, "I am an INDIAN before I am anything else. Jai Hind. #Justice #Liberty #Equality #Fraternity #HappyRepublicDay".
Actress Anushka Sharma tweeted, "United we stand, divided we fall. Happy #RepublicDay to you all! Jai Hind!".
"So very proud of my country. Jai Hind!", veteran actor Rishi Kapoor wrote.
"Happy #RepublicDay to all", tweeted Salman Khan.
Asking everyone to stand together, Bollywood actress Diana Penty wrote, "Happy #RepublicDay to us all! Let's pledge to stand together as one and be the strength India needs to reach its full potential".
Actor Ajay Devgn tweeted, "Salute to our Armed Forces for letting us have a #RepublicDay".
Actor Vivek Anand Oberoi said, "Freedom in our minds,faith in our words,pride in our hearts & memories in our souls.Lets salute the sacrifice of all those that helped to build our great nation!Justice,liberty,equality,fraternity. May our dream of a new, strong & united India come true! Jai Hind????#RepublicDay".
'Padmaavat' actor, Ranveer Singh posted a picture of himself with a flag in his hand, writing, "Happy Republic Day! ?? #jaihind".