His comments came as he extended greetings on the UN Day, which marks the anniversary of the entry into force in 1945 of the UN Charter.
"Greetings on @UN Day. We appreciate UNs efforts in promoting world peace & laud the wide range of initiatives under its guidance," Modi tweeted.
"India is proud of the steadfast support & active participation in several @UN initiatives aimed at making our world a better place," he added in another tweet.