The most-viewed YouTube videos of all time each account for over 2 billion clicks. But which YouTube videos are the most popular ever?

In this article, we list the top 15 most-viewed YouTube videos of all time. And while not all of them will appeal to you, they're worth watching to see what's big on YouTube.

15. LooLoo Kids---Jonny Jonny, Yes Papa

Number of views: 2.82 billion

The first of three videos for kids that make the list of the most-viewed YouTube videos of all-time is LooLoo Kids' Jonny Jonny, Yes Papa.

The song has its origins in Kenya. It was first uploaded to YouTube by a nursery rhyme channel in 2009, but it was the 2016 version by LooLoo Kids that went viral---mainly thanks to Twitter.

14. Enrique Iglesias---Bailando

Number of views: 2.83 billion

The first reggaeton song on the list is Bailando by Enrique Iglesias. Although Iglesias also released the song in English and Portuguese, it is the Spanish-language version that has garnered the most attention.

Indeed, it was the first Spanish-language video on YouTube to collect more than 1 billion views.

13. Taylor Swift---Shake It Off

Number of views: 2.88 billion

"Haters gonna hate, hate, hate, hate, hate."

That single lyric immortalized Shake It Off, turning it into a worldwide hit, producing an endless sea of memes, and even getting a shoutout on The Big Bang Theory from Sheldon Cooper.

12. Ed Sheeran---Thinking Out Loud

Number of views: 2.92 billion

Ed Sheeran is one of the most popular artists on Spotify, and his success has clearly translated over to YouTube.

The video features Sheeran performing a ballroom dance with a contestant from US show, So You Think You Can Dance. Prior to shooting, the singer had to learn the necessary moves. He reportedly trained for five hours a day for several weeks while on tour.

11. OneRepublic---Counting Stars

Number of views: 2.93 billion

This 2013 hit from the American band OneRepublic hit number one in 12 countries around the world upon its release, including the US, the UK, Mexico, Poland, Canada, Brazil, and Israel.

It was the first video by a band to reach 1 billion views on YouTube.

10. Katy Perry---Roar

Number of views: 3.02 billion

Katy Perry's Roar is a middle-of-the-road pop song that went to number one in several countries.

Upon release, many fans accused the song of copying Sara Bareilles' track, Brave. Bareilles herself played down the furor.

9. Maroon Five---Sugar

Number of views: 3.14 billion

The video for Maroon Five's Sugar is the most innovative on this list. The band partnered with Wedding Crashers director David Dobkin and traveled around Los Angeles to surprise couples at their weddings.

The video is entirely genuine. For each wedding featured, only one attendee knew about the surprise band, and they were not told the band's identity.

8. Justin Bieber---Sorry

Number of views: 3.25 billion

Bieber's only song in the top 15 isn't the once-popular Baby. Instead, it's his 2015 hit, Sorry.

Fair warning, the song is catchy, but the video is tragically bad (unless you like repetitive dance moves and have a fashion sense from the mid-1990s). We imagine lots of people wish they could delete this video from YouTube. Luckily, we have previously detailed how to delete or restore a YouTube video.

7. Psy---Gangnam Style

Number of views: 3.53 billion

You knew it was coming, didn't you? Along with the song in the top slot (no peeking), it's arguably one of just two videos in the top 15 that's been a bona fide global phenomenon.

It was number one in 30 counties, world leaders and sports stars performed the dance moves, and United Nations Secretary-General, Ban Ki-moon, said it was a "force for world peace." Psy even met with Ki-moon at the UN headquarters in New York.

It's safe to say that Psy's follow-up---Gentleman---wasn't quite as popular.

6. Mark Ronson---Uptown Funk ft. Bruno Mars

Number of views: 3.79 billion

Drawing heavily on the sounds of 1980s funk music, Uptown Funk was a number one song in the U.S. for 14 consecutive weeks. In the end-of-year awards shows, it picked up two Grammys and a Brit.

Sadly, it's another song that's been dogged by accusations of plagiarism and copyright infringement; Ronson and Mars have been sued on five separate occasions. Two of the cases were settled out of court, one resulted in more artists being added to the track's official list of songwriters, and two cases are still ongoing at the time of writing.

5. Masha and The Bear---Recipe for Disaster (Ep. 17)

Number of views: 4.23 billion

Um, what? You weren't expecting that, were you? We definitely weren't.

Masha and The Bear---Recipe for Disaster (Episode 17) is the most viewed non-music video on YouTube and is fifth in the all-time list.

The animated kids' show---which is originally in Russian but has been dubbed into multiple languages---tells the story of Masha and her pet bear as they try to stay out of trouble. In this episode, Masha cooks too much porridge and puts her forest homeland in danger.

4. Wiz Khalifa---See You Again ft. Charlie Puth

Number of views: 4.44 billion

See You Again was written for the movie Furious 7 and is intended as a tribute song for the franchise's deceased former star, Paul Walker.

The movie was in the middle of filming when Walker died in a car accident in 2013. Walker's brothers, Caleb and Cody, were used as stand-ins to complete filming the remaining scenes.

3. Ed Sheeran---Shape of You

Number of views: 4.64 billion

Ed Sheeran joins Katy Perry as the second artist with two videos on the list. The Shape of You is a pop song that draws heavily on Jamaican dancehall music. It was number one in 34 countries.

The video features American dancer Jennie Pegouskie and retired sumo wrestler Yamamotoyama Ryuta.

2. Pinkfong---Baby Shark Dance

Number of views: 4.67 billion

Baby Shark started life as a campfire song by Eren Newton. The Pinkfong version---created by an education company in South Korea---was uploaded in late 2015 and quickly went viral.

It was an instant hit among parents and young children and is now the most-viewed educational video of all-time.

1. Luis Fonsi---Despacito ft. Daddy Yankee

Number of views: 6.65 billion

Luis Fonsi's reggaeton hit Despacito was another global megahit. The song went to number one in 47 countries and made the Top 10 in a further six. It became the first Spanish-language record to go to number one in the US since Macarena managed the feat in 1996.

The song also set a record for the fastest song to reach one billion views, taking just 97 days. In comparison, it took Gangnam Style five months to achieve the same landmark.

What About Justin Bieber's Baby?

So, what became of the former record holder, Justin Bieber's Baby? Despite having 2.1 billion views and no shortage of comments, it has now fallen outside the Top 30 most-viewed YouTube videos of all time. By a curious coincidence, it also takes the number one spot in the most disliked videos on YouTube. Quite the fall from grace, we're sure you'll agree.

Now you know about the top YouTube videos ever uploaded to the site, you should take a look at the best YouTube channels to watch next.