There are 3 series with the name: Animorphs
Animorphs Books in Order
Books by K.A. Applegate and Others1. The Invasion (2011)
2. The Visitor (2011)
3. The Encounter (2011)
4. The Message (2011)
5. Animorphs #5: The Predator (2011)
6. Animorphs #6: The Capture (2012)
7. Animorphs #7: The Stranger (2012)
8. Animorphs #8: The Alien (1997)
9. The Secret (1997)
10. The Android (1997)
11. The Forgotten (1997)
12. The Reaction (1997)
13. The Change (1997)
14. The Unknown (1998)
15. The Escape (1998)
16. The Warning (1998)
17. The Underground (1998)
18. The Decision (1998)
19. The Departure (1998)
20. The Discovery (1998)
21. The Threat (1998)
22. The Solution (1997)
23. The Pretender (1998)
24. The Suspicion (1998)
25. The Extreme (1999)
26. The Attack (1999)
27. The Exposed (1999)
28. The Experiment (1999)
29. The Sickness (1999)
30. The Reunion (1999)
31. The Conspiracy (1999)
32. The Separation (1999)
33. The Illusion (1999)
34. The Prophecy (1708)
35. The Proposal (1999)
36. The Mutation (1999)
37. The Weakness (2000)
38. The Arrival (2000)
39. The Hidden (2000)
40. The Other (2000)
41. The Familiar (2000)
42. The Journey (2000)
43. The Test (2000)
44. The Unexpected (2000)
45. The Revelation (2000)
46. The Deception (2000)
47. The Resistance (2000)
48. The Return (2000)
49. The Diversion (2001)
50. The Ultimate (2001)
51. The Absolute (2002)
52. The Sacrifice (2001)
53. The Answer (2001)
54. The Beginning (2001)
Animorphs Megamorphs Books in Order
Books by K.A. Applegate and Others1. The Andalite's Gift (1997)
2. In the Time of Dinosaurs (1998)
3. Elfangor's Secret (1999)
4. Back to Before (2000)
Animorphs Alternamorphs Books in Order
Books by K.A. Applegate1. The First Journey (1999)
2. The The Next Passage (2000)