- Mara Dyer by Michelle Hodkins
- Splintered by A. G. Howard
- The Immortal Instruments by Cassandra Clare
- Daughter of Smoke & Bone by Laini Taylor
- The Selection by Kiera Cass
- The Lunar Chronicles by Marissa Meyer
- Penryn & the End of Days by Susan Ee
- Altered by Jennifer Rush
- Jessica McClain by Amanda Carlson
- Vampire Academy by Richelle Mead
- The Cousins' War by Philippa Gregory
- Confessions of Georgia Nicolson by Louise Rennison
- Delirium by Lauren Oliver
These are all series I have started and have not yet finished
What are some of your incomplete series?