Twitter has been inundated with heart-warming messages and “awww”-inspiring pictures honouring dads.
Here are some fuzzy ones from well-known personalities;
British television presenter Dan Snow posted a photo of himself at the back seat of a bicycle with his father Peter Snow at the wheel.
The current Speaker of the US House of Representatives, Paul Ryan told us how he planned to celebrate the day with his family.
Journalist and broadcaster, Eamonn Holmes paid tribute to his late father in a tweet.
The presumptive Democratic nominee for the US presidential race, Hillary Clinton, has just become a grandmother for the second time – her daughter Chelsea gave birth to her second child on Saturday. Mrs Clinton posted this picture of herself and husband Bill as parents when Chelsea herself was small.
Microsoft founder and philanthropist Bill Gates is a top photobomber, according to his wife Melinda. Oh, and he’s not a bad father either, she says.
Dad-dancing is often mocked, but not by actress Sharon Stone, who posted a picture of herself dancing with her father.
Retired footballer Rio Ferdinand tweeted this collage of photos.
But it wasn’t all elation. For Muhammad Ali’s daughter Hana, this was her first Father’s Day without him – the iconic boxer and civil rights activist died last month, at the age of 74.
First Lady Michelle Obama shared a photo on Twitter of her with President Barack Obama and their two daughters, Malia and Sasha.
President of Mexico Enrique Pena Nieto paid tribute to his father on Twitter, writing, “Dad, thank you for everything. I embrace you with my heart, wherever you are”.
Canadian Prime Minister Justin Trudeau also tweeted his family photos to mark the day.
Finally, the actor, David Prowse, who played Darth Vader in the original Star Wars trilogy, seems to have a soft spot for his on-screen character.
Produced by Nana Prempeh