The Sony Xperia 1 II is an Android smartphone manufactured by Sony Mobile. Part of Sony's Xperia series, the phone was announced along with the mid-range Xperia 10 II on February 24, 2020. Key upgrades over its predecessor, the Xperia 1, include support for 5G connectivity and Qi wireless charging, and a triple-lens camera which incorporates ZEISS-branded lenses with T✻ (T-Star) anti-reflective coating as well as technology brought over from Sony's Alpha camera lineup.

Xperia is a series of and the sole brand name of smartphones marketed by Sony. It also includes various related mobile hardware such as tablets as well as software. Xperia was originally developed by Sony Ericsson before becoming Sony Mobile as a result of the mobile phone manufacturer being taken over and solely owned by Sony in 2012; it has been under Sony Corporation since 2021 following Sony Mobile's merger. The name Xperia is derived from the word "experience", and was first used in the Xperia X1 tagline of "I Xperia the best".