"Nobody but you, @gwenstefani, that I'd want to share this year's @recordingacademy #GRAMMYs stage with! Tune in Jan. 26th to watch our performance," the country star said on Tuesday alongside a promotional image of himself.
Shelton referenced in his post his duet with Stefani titled "Nobody But You" which appears on his latest album, Fully Loaded: God's Country.
Stefani and Shelton confirmed their relationship in November 2015.
Shelton's song "God's Country" is nominated for Best Country Solo Performance at the Grammys.
Lizzo leads the field with eight nominations followed by Billie Eillish and Lil Nas X with six nominations each.
The Grammys will be taking place Jan. 26 at the Staples Center in Los Angeles. The event will be aired live on CBS at 8 p.m. EDT and will feature Alicia Keys as host for the second year in a row.