CN

1. C.N. Ashwath Narayan
2. C.N. Jayadevan
3. Calcineurin
4. Canadian National Railway
5. Canadian Northern Railway
6. Carrier-to-noise ratio 
7. Carson-Newman College
8. Cartoon Network
9. Chaotic neutral
10. Chief of Navy (Australia)
11. China Netcom
12. Chinese Nationalist Party 
13. Chuck Norris
14. Cn (digraph)
15. CN Centre
16. CN gas
17. CN Tower
18. Collegiate Network
19. Combined Nomenclature
20. Comité National de Secours et d'Alimentation
21. Common Name
22. Commonwealth of Nations
23. Computational neuroethology
24. Conference North
25. Copernicium
26. Copy number
27. Correspondent Node
28. Cranial nerve
29. Crosby & Nash
30. Curve number
31. Cyanide
32. Cyanogen
33. Cyber Nations
34. People's Republic of China