Lifeforms is the sixth studio album by American alternative rock band Angels & Airwaves. The album was released on September 24, 2021, and marks the longest gap between albums for the band following 2014's The Dream Walker. It is the band's first album with bassist Matt Rubano, who replaced Matt Wachter in 2019, and the first with guitarist David Kennedy since 2011's Love: Part Two.

Lifeforms was a conscious effort by the band's frontman, Tom DeLonge, to return to their earlier sound, while also incorporating elements of punk rock and post-hardcore. To do this, the band put a higher emphasis on the guitar parts so that the album would have a more "rebellious and emotional connection" to listeners. It was recorded over the span of three years, beginning in April 2018.

The album was promoted by five official singles; "Rebel Girl", "Euphoria", "Restless Souls", "Losing My Mind", and "Spellbound". Promotional singles "Kiss & Tell" and "Timebomb" were also released prior to the album.