Two other of Mr Obama's tweets featured in the top ten - both of the others sent shortly before his departure from the White House.
All of the political and humanitarian tweets, though, were outperformed on the social media platform by one man's appeal for free chicken nuggets.
The former President's paean to diversity and denunciation of hatred earned spurred almost 4.6 million people to click the small heart icon - the most of any tweet this year.
The current U.S. president made neither the most-retweeted nor the most-shared lists this year. My last ask is the same as my first.
US President Donald Trump is perhaps the world's most famous Twitter user, but the most popular post of 2017 was from.
A tweet in which the former president appealed to Americans to "believe in [their] ability to create change" was the fifth most-shared globally. The star's admission that she was "broken" by events was retweeted more than a million times. In the other, ranked eighth and posted the morning of Inauguration Day, he said: "It's been the honor of my life to serve you".
In what is the only video on the top 9 list, Sam Martin of the Detroit Lions sits with his dog as he promises to donate 6 lbs of dog food for every retweet to Houston in the wake of Hurricane Harvey.
Ariana Grande's tweet after the tragic Manchester Bombing at her May 22 concert in England received 1.1 million retweets. You made me a better leader and a better man.
Also on the top 10 list was the explicitly anti-Trump sentiment of the National Basketball Association star LeBron James after the controversy over whether the Golden State Warriors would attend an event at the White House.
Meanwhile, the band Linkin Park had the sixth-most retweeted tweet with a picture of lead singer Chester Bennington, who committed suicide on July 20.
President Donald Trump, whose tweets make worldwide news on a daily basis, did not make the list. So therefore ain't no invite.
Within the U.S., Trump and Vice President Mike Pence were the top tweeted-about elected officials, followed by House Speaker Paul Ryan (R-Wis.) and Obama.