All Time Low is an American pop punk band from Lutherville-Timonium, Maryland.

The beginning of All Time Low dates back to when the members were in their freshman year at Dulaney High School. It began when Jack Barakat and Marc Shilling met in class and realized they both shared an appreciation for pop music. Jack played guitar and Marc was a bassist/singer so they decided to throw a band together for fun. Jack knew a drummer from middle school, Yanni Giannaros (now of Baltimore band Four Fifty One), who would join them. These three met on weekends and jammed, playing mostly Blink-182 and New Found Glory cover songs. It was around this time that Alex Gaskarth decided to leave his previous band, Fire In The Hole. Jack managed to convince Alex to come play guitar and sing with the band. Now a foursome, the band decided on the name NeverReck, and began to compose their own songs. The first member change came when the band met Rian Dawson. His drumming skills coupled with his love for pop music were the main factors for Giannaros' replacement. After a few months of practicing, writing, and recording their own songs and covers, Jack, Rian, and Alex decided to remove Marc from the band because he could not practice as often as they wanted, among other things. In their search for new members, they settled on two members of the band The Coincidentals who were in the midsts of breaking up. These members included guitarist, TJ Ihle, and Chris Cortillio, on bass. They then decided to change the band name to All Time Low (named after a lyric in a New Found Glory song.) Ihle and Cortillio were in the band for two months before they decided to quit. Ihle currently plays in Maryland punk band The Pizza Monsters.

Following the loss of the two members, the band took a small hiatus while attempting to look for a bassist. They eventually stumbled upon Towson High School student Zack Merrick. They began playing shows and making a name for themselves. Soon after Merrick joined they signed to acclaimed local label Emerald Moon Records. Their first four track EP, The Three Words to Remember in Dealing with the End, appeared on Emerald Moon Records, a regional record label. In July 2005, the band released their first full length The Party Scene. 

In 2006, just months before Alex Gaskarth, Jack Barakat, and Rian Dawson graduated from Dulaney High School and Zack Merrick from Towson High School, All Time Low signed with Hopeless Records. Several months later the band released a new EP entitled Put Up or Shut Up on Hopeless Records, containing newly recorded versions of songs from The Party Scene along with two new tracks. After extensive touring and promoting to support "Put Up or Shut Up," the band began recording "So Wrong, It's Right" on April 18, 2007 with Matt Squire and released the album on September 25, 2007. Since the release, the band has gotten extensive amounts of success, such as being featured on MTV's Discover And Download, have been added to MTV's Big Ten, and been added to the MTV Hits playlist. The band is currently being managed by Matthew Flyzik, former frontman of the disbanded Maryland band Underscore.

All Time Low won the Energizer Encore Contest to play 10 minutes longer on the 2007 Warped Tour in Columbia, MD, Sacramento, CA, Barrie, ON, and Boston, MA.

All Time Low made their live television debut on Jimmy Kimmel Live! on March 7, 2008.

They made their live debut in the UK at the 2008 Give It A Name Festival supporting The Plain White T's. They then embarked on a 2008 tour of the UK with Cobra Starship.