The magazine cited Modi's unconventional announcement on Twitter of his visit to Pakistan last year while naming him among 'The 30 Most Influential People on the Internet' for the second year in a row in this year's unranked list.
The list includes US presidential hopeful Donald Trump, reality TV star Kim Kardashian and her husband Kayne West, author J K Rowling, former Olympic athlete Caitlyn Jenner and soccer star Cristiano Ronaldo.
On Modi, Time said the leader of the world's largest democracy is also an "Internet star", boasting more than 18 million Twitter followers and over 32 million Facebook likes. It also cited Modi's use of social media to break news and conduct diplomacy.
"And unlike some of his contemporaries, he often uses social media to break news and conduct diplomacy," it said.
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The magazine cited Modi's tweet that he would visit Lahore to wish Pakistani Prime Minister Nawaz Sharif on his 66th birthday.
"That tweet made headlines for the wrong reasons, though: the Afghan President replied with his thanks, and a polite note that he was actually born on May 19," the magazine said.
Last year, Modi was named by TIME among the 100 most influential people in the world in its annual list, with US President Barack Obama penning a flattering profile of him.
This year's list also includes Indo-Canadian vlogger Lilly Singh, who TIME said is rapidly becoming one of the biggest stars on YouTube, both on and off-screen.
Despite facing flak for his often insulting tweets and comments online, Trump has almost 7 million followers on Twitter, more than any other presidential candidate including Hillary Clinton, it said.