Side B is the third and final EP by American singer and songwriter Christina Grimmie.

It was released posthumously on April 21, 2017, through Republic Records and Universal Music Group.

Grimmie's family had scheduled to release her first single "Invisible" on February 14, 2017.

On the day of the release of "Invisible", Grimmie's family and producer confirmed that they will be releasing the third EP, Side B, as Christina also confirmed herself before her death on June 10, 2016.

[1] At some point, this EP as well as her second album All Is Vanity were made unavailable on streaming platforms for unknown reasons.