Here is a list of dinosaurs beginning with B.

1. Baalsaurus
2. Bactrosaurus
3. Bagaceratops
4. Bagaraatan
5. Bagualia
6. Bagualosaurus
7. Bahariasaurus
8. Bainoceratops
9. Bajadasaurus
10. Bambiraptor
11. Banji
12. Bannykus
13. Baotianmansaurus
14. Barapasaurus
15. Barilium
16. Barosaurus
17. Barrosasaurus
18. Barsboldia
19. Baryonyx
20. Bashanosaurus
21. Bashunosaurus
22. Batyrosaurus
23. Baurutitan
24. Bayannurosaurus
25. Beg
26. Beibeilong
27. Beipiaosaurus
28. Beishanlong
29. Bellusaurus
30. Berberosaurus
31. Berthasaura
32. Betasuchus
33. Bicentenaria
34. Bienosaurus
35. Bissektipelta
36. Bistahieversor
37. Bisticeratops
38. Blasisaurus
39. Blikanasaurus
40. Bolong
41. Bonapartenykus
42. Bonapartesaurus
43. Bonatitan
44. Bonitasaura
45. Borealopelta
46. Borealosaurus
47. Boreonykus
48. Borogovia
49. Bothriospondylus
50. Brachiosaurus
51. Brachyceratops
52. Brachylophosaurus
53. Brachypodosaurus
54. Brachytrachelopan
55. Bradycneme
56. Brasilotitan
57. Bravasaurus
58. Bravoceratops
59. Breviceratops
60. Brighstoneus
61. Brohisaurus
62. Brontomerus
63. Brontosaurus
64. Bruhathkayosaurus
65. Buitreraptor
66. Burianosaurus
67. Buriolestes
68. Byronosaurus