Here is a list of dinosaurs beginning with X.

1. Xenoceratops
2. Xenoposeidon
3. Xenotarsosaurus
4. Xianshanosaurus
5. Xiaosaurus
6. Xiaotingia
7. Xingtianosaurus
8. Xingxiulong
9. Xinjiangovenator
10. Xinjiangtitan
11. Xiongguanlong
12. Xixianykus
13. Xixiasaurus
14. Xixiposaurus
15. Xiyunykus
16. Xuanhanosaurus
17. Xuanhuaceratops
18. Xunmenglong
19. Xuwulong