CU

1. "See you" in e-mail shorthand
2. Cairo University
3. Cairo University (Egypt)
4. Calcutta University (India)
5. Calibration Unit
6. Callous and unemotional traits
7. Cambridge University
8. Cameron University
9. Cameron University
10. Campbell University
11. Campbellsville University
12. Canadian Utilities
13. Cardiff University
14. Carleton University
15. Carleton University, Ottawa
16. Carrie Underwood (singer)
17. Catalog Unit
18. Cataloging Unit
19. Cataloging Units
20. Catholic University (Washington, DC)
21. Catholic University of Eichstätt-Ingolstadt
22. Cattlemen's Union
23. Cedarville University
24. Cedarville University (Cedarville, OH)
25. Celebrities Uncensored
26. Cellulase Unit
27. Cellulase Unit
28. Cellulase Units
29. Cenhedloedd Unedig (Welsh: United Nations)
30. Center UCD
31. Central Unit
32. Central US
33. Century University
34. Certificat d'Urbanisme (French: Urban Planning Certificate)
35. CERVECERIAS UNIDAS
36. Champaign-Urbana (Illinois)
37. Channel Unit
38. Chapman University
39. Chapman University
40. Charles University, Prague
41. Chemistry Undergraduate
42. Cheyney University
43. Chinese University (Hong Kong)
44. Chittagong University
45. Chittagong University
46. Christian Union
47. Christian Union (students)
48. ChristianUnion
49. Chronic Urticaria
50. Chulalongkorn University
51. Chulalongkorn University
52. CINCINNATI UNION
53. Cincinnati University
54. City University (main campus in Washington State)
55. Ciudad Universitaria (University City)
56. Civil Union
57. Claflin University (Orangeburg, SC)
58. Clark University (Worcester, MA)
59. Clarkson University
60. Clarkson University (Potsdam, NY)
61. CLASSIFICATION UU
62. Clemson University
63. Clemson University
64. Clemson University (Clemson, SC)
65. Cleveland UMADAOP (Cleveland, OH)
66. Client Utility
67. clinical units
68. Close Up
69. Close Utilization (forestry)
70. Close-up 
71. Close-Up
72. Code de l'Urbanisme (French: Urban Planning Code)
73. coefficient of uniformity
74. Coefficient of Utilisation
75. Coefficient of Utilization
76. Colgate University
77. Colgate University
78. Colitis Ulcerosa (bowel disease)
79. Collection at the University
80. College Union
81. College Used
82. Colorado University
83. Columbia Ultimate (collections software)
84. Columbia University
85. Columbia University
86. Column Uniform
87. Combat Upgrade (Star Wars Galaxies, MMO gaming)
88. Combiner Unit
89. Comenius University (Bratislava, Slovak Republic)
90. Commercial Union (insurance company)
91. Commodity Utilization
92. Common Unit
93. Common User
94. Communications Unit
95. Community United
96. Compatible Unit
97. Computer Unit
98. Computing Unit
99. Computing Units
100. Concord Law School (online law institution)
101. Concordia University
102. Concordia University (Montreal)
103. Condensing Unit (HVAC)
104. configuration units
105. Configuration Update
106. Congressional Union (early suffragist movement)
107. Conservation the University
108. Consumers Union
109. Consumers Union (publisher of Consumer Reports)
110. Consumptive Use
111. Control Unit
112. Control unit (disambiguation)
113. Cooper Union
114. Cooper Union
115. Cooperating Units
116. Coordinating Unit
117. Copper (Cuprum)
118. Cornell University
119. Cornell University
120. Cornerstone University
121. Cornerstone University
122. Correlated Uniqueness (statistical model)
123. Countermeasures Unit (for weapons of mass destruction; FBI)
124. Covenant University
125. Coventry University
126. Coventry University (UK)
127. Cover Up
128. Covert Untouchables
129. Cranfield University
130. Credit union
131. Credit Union
132. CREDIT UNION/SPACE
133. Creighton University
134. Creighton University
135. Crisp Uncirculated (paper currency grading)
136. Crude Unit
137. Cryptic Union (gaming)
138. cu ("call unix") 
139. Cuba
140. Cubana de Aviacion, SA Cuba (IATA airline code)
141. Cubic
142. Cubic Capacity (US DoD)
143. Cultural Understanding
144. Cumulus (cloud formation)
145. Curtin University
146. Customer Utilization
147. Customs Union (international trade relations)
148. See You (chat)
149. The Chinese University of Hong Kong
150. University of Calcutta
151. University of Cambridge
152. University of Colorado
153. University of Colorado at Boulder
154. University of Colorado system