The name Leo has never been more popular. The name has jumped 62 spots since 2013. Pictured is "Once Upon a Time in Hollywood" star Leonardo DiCaprio.

This is the second straight year that Thomas has ranked 49th in popularity. Pictured is Tom Cruise, arguably the most famous Thomas. 

Here's Nathan Fillion, the star of ABC's "The Rookie." The name Nathan hasn't ranked this low since 1974. 

After breaking into the top 100 for the first time in 2014, the name Asher has surged in popularity. Pictured is Asher Angel, who portrayed Billy Batson in "Shazam!"

This is the least popular that the name Ryan has been since 1971. Ryan Reynolds, born in 1976, is pictured. 

The Caleb moniker peaked in popularity in 2009 at No. 31. "Stranger Things" fans know Caleb McLaughlin (pictured) as Lucas Sinclair in the popular Netflix series. 

This is the most popular Theodore has been since 1907. Pictured is Ivanka Trump and Jared Kushner with their son, Theodore Kushner. 

Here's comedian Andy Samberg. The name Andrew has dropped 33 spots in popularity since 2007. 

This is the lowest Christopher has been in popularity since 1957. Pictured is Chris Hemsworth, known for playing Thor in the Marvel Cinematic Universe. 

Ranking in the top 10 from 1979 to 2009, Joshua isn't as popular as it once was. That's Josh Hutcherson, from "Hunger Games" fame, in the picture. 

After breaking into the top 50 for the first time ever in 2016, Lincoln is still rising in popularity. Pictured is Lincoln Younes, who played Romeo Kovac in "Tangle."

Jaxon, not Jackson, has never been more popular. The name jumped five slots in 2018. Pictured is the character Jax Teller, played by Charlie Hunnam in FX's "Sons of Anarchy."

This is the least popular Anthony has been since 1948. Pictured is the Lakers' newly acquired All Star, Anthony Davis. 

The name Mateo has surged in popularity this decade, rising from No. 222 in 2010 to No. 37 in 2018. Pictured (left) is Elias Janssen, who played Mateo in "Jane the Virgin." 

Julian is the 36th most popular boy name for the second straight year, the highest the name has ever ranked. That's Super Bowl LIII MVP Julian Edelman in the photo. 

This is the lowest Gabriel has ranked since 2001. Pictured is the character Gabriel Susan Lewis, played by Zach Woods, in NBC's "The Office."

Isaac dropped two spots in popularity in the past year. Pictured is Isaac Hempstead Wright, who played Bran Stark in "Game of Thrones."

Here's Levi Miller, the star of "Peter Pan" and "A Wrinkle in Time." This is the highest the name Levi has ever ranked. In 2008, it was the 116th most popular boy name. 

Jumping two spots from last year, Grayson has never been more popular than in 2018. Pictured is former Duke basketball star Grayson Allen. 

The name Dylan dropped two slots in this year's ranking. In the photo is Dylan O'Brien, the star of the Maze Runner franchise. 

The fourth most popular boy name in 2010 and 2011, Jayden has dropped to its lowest mark since 2006. Pictured is the highly recruited Arizona State starting quarterback Jayden Daniels. 

Here's one of the stars of the Fast and Furious franchise, Luke Evans. Luke has been the 29th most popular name for boys twice in the past three years. 

This is the highest the name Jack has ranked since 1939. Pictured is Chris Pratt with his son, Jack Pratt. 

For the second straight year, John is the 27th most popular boy's name.  Pictured is the character John Wick, played by Keanu Reeves. The name Keanu was, unfortunately, not one of the most popular boy names for 2018. 

The name Wyatt is slightly less popular than it was in 2017, dropping down a single spot in the current rankings. Pictured is Wyatt Oleff, who plays Stanley Uris in the "It" horror movie saga. 

Since 2000, Owen has jumped 120 spots from No. 145 to No. 25. That's "Wedding Crashers" actor Owen Wilson in the picture. 

Carter has been the 24th most popular boy name three out of the last four years. Pictured is HGTV's Carter Oosterhouse.

The name Joseph has never been less popular than it was in 2018. In the picture is Joe Jonas of the Jonas Brothers. 

This is the lowest David has ranked since 1926. Pictured is comedian Dave Chappelle. 

Here's Samuel L. Jackson. Samuel is the 21st most popular boy name for the third year in a row. 

Matthew has not made the top 10 since 2007. In the picture is Academy Award-winner Matt Damon. 

Here's Irish soccer player Aiden McGeady, who plays for the club Sunderland. The name Aiden has dropped 10 spots in popularity since its peak of No. 9 in 2010 and 2011. 

The 152nd most popular boy name in 1999, Sebastian broke into the top 20 for the first time ever in 2018. Marvel fans should recognize Sebastian Stan (pictured) as Bucky Barnes, aka the Winter Soldier. 

Jackson has been the 17th most popular boy name four out of the last five years. Pictured is Jackson Rathbone, who played Jasper Hale in the Twilight Saga series.

The name Henry has never been more popular. It jumped two spots from last year's rankings. In the picture is Henry Cavill, who played Superman as recently as 2017. 

For the second straight year, Daniel is the 15th most popular boy's name. Harry Potter fans should know the man pictured is Daniel Radcliffe.

From 1980 to 2010, Michael ranked as a top-three baby boy name. Pictured is "Black Panther" co-star Michael B. Jordan.

Here's "Spider-Man: Far From Home" actor Jake Gyllenhaal. The name Jacob was the most popular boy name from 1999 to 2012. 

The second most popular baby boy name in 2009 and 2010, Ethan's ranking has dipped slightly over the past decade. In the photo is Oscar-nominated actor Ethan Hawke.

From 2008 to 2015, Alexander has been a top 10 baby boy name. The name rose two spots compared with 2017. Pictured is "Big Little Lies" actor Alexander Skarsgård.

After leaping to No. 5 in 2017, Logan fell five spots to No. 10 in 2018. That's actor Logan Lerman in the picture. 

Although Mason is still in the top 10, the name's popularity is dwindling. From 2011 to 2012, Mason was the second-most selected baby boy's name. Pictured is Mason Ramsey, who became famous after a video of him yodeling Hank Williams' "Lovesick Blues" at a Walmart went viral. 

The 11th most popular boy name in 2017, Lucas jumped to No. 8 in 2018. Pictured is "MacGyver" actor Lucas Till.

Back in 2016, Elijah cracked the top 10 for the first time. "Lord of the Rings" fans should recognize Elijah Wood in this picture.

For the past three years, Benjamin has been the sixth-most-popular baby boy name. Pictured is Academy Award-winner Ben Affleck.

Here's the fictional Oliver Queen, aka the Green Arrow, from the CW superhero show. The name Oliver has seen a meteoric rise this decade. From 2010 to 2018, Oliver has risen from 88th overall to the top five. 

From 1993 to 2013, the name James did not crack the top 10. In 2017, it reached its peak of No. 4. That's actor James McAvoy in the picture. 

A top 10 name since 2006, William has been the third most popular male baby name the past three years. Pictured is Will Smith, the star of the upcoming film "Bad Boys For Life." 

Here's "To All the Boys I've Loved Before" star Noah Centineo. After being the most popular male name from 2013 to 2016, Noah has been the second most selected baby boy name for the past two years. 

For the second straight year, the name Liam is the most selected baby boy name in the U.S., according to Social Security Administration data. Pictured is Liam Hemsworth, one of the most famous Liams.