The names of all vitamins are as follows:

1. Vitamin A
2. Vitamin B1 (Thiamine)
3. Vitamin B2 (Riboflavin)
4. Vitamin B3 (Niacin)
5. Vitamin B5 (Pantothenic Acid)
6. Vitamin B6 (Pyridoxine)
7. Vitamin B7 (Biotin)
8. Vitamin B9 (Folate)
9. Vitamin B12 (Cobalamin)
10. Vitamin C (Ascorbic Acid)
11. Vitamin D (Calciferol)
12. Vitamin E (Tocopherol)
13. Vitamin K (Phylloquinone)

These vitamins play various essential roles in the human body, and each has its unique functions and dietary sources.