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 | The Currency of War (The Imperials Saga #4) Melinda Snodgrass March 2021 science fiction > space opera |
 | The Last Watch (The Divide Series #1) J. S. Dewes April 20, 2021 science fiction > military science fiction + space opera |
 | Greater Good (Thrawn Ascendancy #2) Timothy Zahn April 27, 2021 science fiction > space opera |
 | Aetherbound E. K. Johnston May 25, 2021 science fiction > space opera, young adult |
 | A War of Swallowed Stars (The Celestial Trilogy #3) Sangu Mandanna June 1, 2021 science fiction > space opera, young adult |
 | Ten Low Stark Holborn June 1, 2021 science fiction > space opera |
 | Artifact Space Miles Cameron June 24, 2021 science fiction > space opera |
 | Catalyst Gate (The Protectorate #3) Megan E. O'Keefe June 24, 2021 science fiction > space opera |
 | The Rising Storm (Star Wars: The High Republic) Cavan Scott July 6, 2021 science fiction > space opera |
 | Assassin's Orbit John Appel July 20, 2021 science fiction > space opera |
 | Inhibitor Phase (Revelation Space) Alastair Reynolds July 27, 2021 science fiction > space opera |
 | Shards of Earth (The Final Architects Trilogy #1) Adrian Tchaikovsky August 3, 2021 science fiction > space opera |
 | Suns Will Rise (System Divine #3) Jessica Brody, Joanne Rendell August 3, 2021 science fiction > space opera, young adult |
 | The Necropolis Empire (Twilight Imperium #2) Tim Pratt August 3, 2021 science fiction > space opera |
 | The Exiled Fleet (The Divide Series #2) J. S. Dewes August 17, 2021 science fiction > military science fiction + space opera |
 | The Scavenger Door (The Finder Chronicles #3) Suzanne Palmer August 17, 2021 science fiction > space opera |
 | Light Chaser Peter F. Hamilton, Gareth L. Powell August 24, 2021 science fiction > space opera |
 | The Second Rebel (The First Sister Trilogy #2) Linden A. Lewis August 24, 2021 science fiction > space opera |
 | Furious Heaven (The Sun Chronicles #2) Kate Elliott September 1, 2021 science fiction > space opera |
 | The Autobiography of Mr. Spock (Star Trek) David A. Goodman September 7, 2021 science fiction > space opera |
 | You Sexy Thing Cat Rambo September 7, 2021 science fiction > space opera |
 | Oaths of Legacy (The Bloodright Trilogy #2) Emily Skrutskie September 14, 2021 science fiction > space opera |
| Far from the Light of Heaven Tade Thompson October 5, 2021 science fiction > space opera |
 | Thronebreakers (Crownchasers #2) Rebecca Coffindaffer October 12, 2021 science fiction > space opera, young adult |
| Ronin (Star Wars Visions) Emma Mieko Candon October 12, 2021 science fiction > space opera |
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