Hashtags that start with U

Here is a long list of hashtags that begin with the letter U that have been used on social sites like Twitter:

1. #u2
2. #uarts
3. #ubuntu
4. #ucantbetoughandsay
5. #ucla
6. #uconn
7. #uf
8. #ufc
9. #ufc145
10. #ufconfox
11. #ugh
12. #uh
13. #uhsb
14. #uk
15. #um
16. #umass
17. #umbc
18. #umbcsocial
19. #umd
20. #umw
21. #un
22. #unbroken
23. #unc
24. #undeniable
25. #underthemistletoe
26. #unemployment
27. #unfollow
28. #unfollowdiddy
29. #union
30. #unions
31. #united
32. #university
33. #unix
34. #unlevel
35. #unlv
36. #unm
37. #up
38. #upallnight
39. #upcfallconcert
40. #upeian105
41. #uppers
42. #uptown
43. #uri
44. #us
45. #usa
46. #usawantsmcfly
47. #usc
48. #userfocus
49. #usetittiesinamovietitle
50. #usf
51. #usguys
52. #usinno
53. #usmnt
54. #usps
55. #uswnt
56. #ut
57. #utsa
58. #uva
59. #uw
60. #uwebc
61. #uwm
62. #uwrightnow
63. #uwsocial
64. #ux

You can add more hashtags in the comments section to help make this resource more complete and useful for users of Twitter and other social networking sites. And why not explore the other starting letter lists of hashtags on this site for letters A-Z.