In a post on X (formerly Twitter), PM Modi said, "Best wishes to all family members of the country on Republic Day. Jai Hind!".
French President Emmanuel Macron is the chief guest at the day's main programme and parade on Kartavya Path.
Extending his "warmest wishes" to PM Modi and the people of India, Macron said in a social media post: "Proud to be with you. Let's celebrate!"
Vice President Jagdeep Dhankhar also extended "warm" greetings on the "joyous" occasion. "Seventy-five years ago, the founding fathers of our Constitution envisioned a nation where justice, liberty, equality and fraternity would be the guiding principles of the world's largest and the most inclusive democracy" he said on X.
Dhankhar said, "On this day, in the Amrit Kaal of our Republic, we reflect upon the struggles, sacrifices and accomplishments that have shaped Bharat as a beacon of hope for the rest of humanity".
Union Home Minister Amit Shah in his message said, "On this auspicious occasion of democracy, I salute all the freedom fighters, constitution makers and brave soldiers who sacrificed their lives for the unity and integrity of the country".
He urged one and all to take a pledge to protect India's democratic values and contribute in realising "Prime Minister Nerendra Modi's resolve of a developed India".
Defence Minister Rajnath Singh called for reaffirming the commitment towards making India a strong and developed country, on this historic occasion.
The Republic Day parade will commence at 10-30 am from New Delhi's Vijay Chowk.
This year's top attractions include the participation of a women's tri-service group and a French contingent. India's use of Artificial Intelligence and ISRO's Chandrayaan-3 are among other highlights in this parade.