"Hindi should be made one of the official languages of the UN. When the International Yoga Day can be held on June 21 following the mandate of 177 nations, why can't Hindi language become one of the official languages of the UN? We should make efforts to achieve this goal," Singh said in his concluding address of the three-day World Hindi Conference.
The next edition of the mega event will be held in 2018 in Mauritius, which has a large population of India-origin people.
The current official languages of the UN are English, French, Spanish, Russian, Chinese and Arabic.
Singh said Hindi had united the country during the freedom struggle, but unfortunately it couldn't become the "Rashtriya bhasha" (national language). It only became "Raj bhasha" (language of governance).
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Unfortunately, post-independence, our leadership couldn't make Hindi the language of India possibly due to regional politics and political gains, he maintained.
Given the wide use of Hindi, it is a misconception that English was the 'sampark bhasha' (link language) of India, the Home Minister noted.
He said according to search giant Google, the content generation in Hindi on Internet in India was 94 per cent, whereas it was just 19 per cent in English.
Bollywood megastar Amitabh Bachchan was to attend the concluding session of the conference but could not make it to the event.
But in his message, read out by Rajya Sabha MP Anil Dave, he spoke about importance of dialogues in Hindi films and how they are inspired by words spoken by common people rather than their refined form found in dictionaries.