The following items indicate cases where namespace collision would occur if template names were case-insensitive, as of 22 April 2023.^[update]

Please remove or mark fixed items.

1. ((Air Force)) redirects to ((US Air Force)), whereas ((Air force)) exists.
2. ((AL)) and ((Al)) both exist.
3. ((AND)) and ((And)) both exist.
4. ((Aut)) redirects to ((Smallcaps)), whereas ((AUT)) exists.
5. ((BLACK)) and ((Black)) both exist.
6. ((BoA)) and ((Boa)) both exist.
7. ((BB)) redirects to ((Bot Bottom)), whereas ((Bb)) exists.
8. ((BotS/doc)) and ((Bots/doc)) both exist.
9. ((BotS)) and ((Bots)) both exist.
10. ((BOT)) redirects to ((BWA)), whereas ((Bot)) exists.
11. ((CFL)) redirects to ((Canadian Football League)), whereas ((Cfl)) exists.
12. ((DATE/doc)) and ((Date/doc)) both exist.
13. ((DATE)) and ((Date)) both exist.
14. ((Dm)) redirects to ((Data missing)), whereas ((DM)) exists.
15. ((DYKNom)) and ((DYKnom)) both exist.
16. ((Esp)) redirects to ((ESp)), whereas ((ESP)) exists.
17. ((ESp)) and ((ESP)) both exist.
18. ((Ger)) redirects to ((Ger (Hasidic dynasty))), whereas ((GER)) redirects to ((DEU)).
19. ((GOD)) and ((God)) both exist.
20. ((GRC)) and ((Grc)) both exist.
21. ((WikiProject Help)) redirects to ((Wikipedia Help Project)), whereas ((WikiProject help)) redirects to ((Help Out)).
22. ((Historical Rail Start)) and ((Historical rail start)) both exist.
23. ((KIA)) and ((Kia)) both exist.
24. ((Lao)) redirects to ((Lao script needed)), whereas ((LAO)) exists.
25. ((LAT)) redirects to ((LVA)), whereas ((Lat)) exists.
26. ((Mb)) redirects to ((Mfd bottom)), whereas ((MB)) exists.
27. ((MYA)) redirects to ((MMR)), whereas ((Mya)) redirects to ((Ma)).
28. ((Mpl)) redirects to ((Minor planet link)), whereas ((MPL)) exists.
29. ((Ms)) redirects to ((Lang-ms)), whereas ((MS)) exists.
30. ((NB)) and ((Nb)) both exist.
31. ((Nld/doc)) redirects to ((Di-no license/doc)), whereas ((NLD/doc)) exists.
32. ((Nld)) redirects to ((Di-no license)), whereas ((NLD)) exists.
33. ((NO)) and ((No)) both exist.
34. ((PG)) redirects to ((Paul Goodman)), whereas ((Pg)) redirects to ((Political Graveyard)).
35. ((PLE)) redirects to ((PSE)), whereas ((Ple)) exists.
36. ((Pse)) redirects to ((Philippine Stock Exchange)), whereas ((PSE)) exists.
37. ((RefDesk)) redirects to ((RefDesk help icon)), whereas ((Refdesk)) exists.
38. ((RFCU/doc)) and ((Rfcu/doc)) both exist.
39. ((RFCU)) and ((Rfcu)) both exist.
40. ((Shn)) redirects to ((Script/shn-Mymr)), whereas ((SHN)) exists.
41. ((SockBlock)) redirects to ((Sockblock)), whereas ((Sockblock)) exists.
42. ((Sockpuppetcheckuser)) redirects to ((Checked sockpuppet)), whereas ((SockpuppetCheckuser)) exists.
43. ((SOiL)) redirects to ((Soil (American band))), whereas ((Soil)) redirects to ((WikiProject Soil)).
44. ((TAG)) and ((Tag)) both exist.
45. ((TI)) redirects to ((Template link)), whereas ((Ti)) exists.
46. ((Tls/doc)) redirects to ((Template link with subst/doc)), whereas ((TLS/doc)) exists.
47. ((Tls)) redirects to ((Template link with subst)), whereas ((TLS)) exists.
48. ((TS)) redirects to ((Template sandbox)), whereas ((Ts)) redirects to ((Timestamp)).
49. ((UserWPA2)) redirects to ((User WPA2)), whereas ((Userwpa2)) exists.
50. ((UTC)) and ((Utc)) both exist.
51. ((VIE)) redirects to ((VNM)), whereas ((Vie)) exists.
52. ((VW)) redirects to ((Volkswagen Passenger Cars)), whereas ((Vw)) redirects to ((Uw-vandalism1)).
53. ((Wm)) redirects to ((WelcomeMenu)), whereas ((WM)) exists.
54. ((WPNOVELS)) redirects to Wikipedia:WikiProject Novels/Navigation, whereas ((WPNovels)) redirects to ((WikiProject Novels)).
55. ((WPOLYMPICS)) redirects to Wikipedia:WikiProject Olympics/WPOLYMPICS, whereas ((WPOlympics)) redirects to ((WikiProject Olympics)).
56. ((WPPoetry)) redirects to ((WikiProject Poetry)), whereas ((WPPOETRY)) exists.

1. ((User AB)) and ((User ab)) both exist.
2. ((User ACE)) and ((User ace)) both exist.
3. ((User Ada)) and ((User ada)) both exist.
4. ((User AF-1)) and ((User af-1)) both exist.
5. ((User AF-2)) and ((User af-2)) both exist.
6. ((User AF-3)) and ((User af-3)) both exist.
7. ((User ANG)) and ((User ang)) both exist.
8. ((User anime)) redirects to Wikipedia:WikiProject Anime and manga/Userbox/User anime, whereas ((User Anime)) exists.
9. ((User APC)) and ((User apc)) both exist.
10. ((User asu)) redirects to ((User Arizona State University)), whereas ((User ASU)) exists.
11. ((User AT)) redirects to ((User Appalachian Trail)), whereas ((User at)) redirects to ((User de-AT)).
12. ((User Ataturk)) redirects to ((User Atatürk)), whereas ((User ataturk)) exists.
13. ((User AU)) and ((User au)) both exist.
14. ((User Australian Rules Football)) and ((User Australian rules football)) both exist.
15. ((User BC)) and ((User bc)) both exist.
16. ((User BD)) and ((User bd)) both exist.
17. ((User BG-1)) and ((User bg-1)) both exist.
18. ((User BG-2)) and ((User bg-2)) both exist.
19. ((User BG-3)) and ((User bg-3)) both exist.
20. ((User BG)) and ((User bg)) both exist.
21. ((User Bi)) and ((User bi)) both exist.
22. ((User CAR)) and ((User car)) both exist.
23. ((User CE)) and ((User ce)) both exist.
24. ((User contributions)) redirects to ((User contrib)), whereas ((User Contributions)) exists.
25. ((User CRS)) and ((User crs)) both exist.
26. ((User CS)) and ((User cs)) both exist.
27. ((User CSB)) and ((User csb)) both exist.
28. ((User CSS)) and ((User css)) both exist.
29. ((User DAR)) and ((User dar)) both exist.
30. ((User degree/AAS)) and ((User degree/AAs)) both exist.
31. ((User Devon)) and ((User devon)) both exist.
32. ((User English Ancestry)) redirects to ((User English descent)), whereas ((User English ancestry)) exists.
33. ((User Estonian History)) and ((User Estonian history)) both exist.
34. ((User EU)) and ((User eu)) both exist.
35. ((User FA)) and ((User fa)) both exist.
36. ((User fife)) redirects to User:UBX/fife, whereas ((User Fife)) exists.
37. ((User filipino)) redirects to ((User Filipino ancestry)), whereas ((User Filipino)) exists.
38. ((User French)) and ((User french)) both exist.
39. ((User FY)) redirects to ((User WikiProject Yugoslavia)), whereas ((User fy)) exists.
40. ((User GA)) redirects to ((User WikiProject Good Articles)), whereas ((User ga)) exists.
41. ((User Gator)) and ((User gator)) both exist.
42. ((User Grammar)) and ((User grammar)) both exist.
43. ((User Helper)) and ((User helper)) both exist.
44. ((User HK)) and ((User hk)) both exist.
45. ((User ICQ)) and ((User icq)) both exist.
46. ((User ID)) and ((User id)) both exist.
47. ((User IIT)) and ((User iit)) both exist.
48. ((User ITS)) redirects to ((User its-it's)), whereas ((User its)) exists.
49. ((User Jedi)) and ((User jedi)) both exist.
50. ((User JS)) redirects to ((User js-N)), whereas ((User js)) exists.
51. ((User kon)) redirects to ((User kg)), whereas ((User KON)) exists.
52. ((User KU)) and ((User ku)) both exist.
53. ((User LOL)) and ((User lol)) both exist.
54. ((User ma)) redirects to ((User arz)), whereas ((User MA)) exists.
55. ((User MacBook Air)) and ((User Macbook Air)) both exist.
56. ((User Mandolin)) and ((User mandolin)) both exist.
57. ((User manga)) redirects to Wikipedia:WikiProject Anime and manga/Userbox/User manga, whereas ((User Manga)) exists.
58. ((User Marimba)) redirects to User:UBX/Marimba, whereas ((User marimba)) exists.
59. ((User Meta)) redirects to ((User Meta-Wiki)), whereas ((User meta)) exists.
60. ((User MG)) and ((User mg)) both exist.
61. ((User MN)) and ((User mn)) both exist.
62. ((User MO)) and ((User mo)) both exist.
63. ((User Musician)) and ((User musician)) both exist.
64. ((User NB)) and ((User nb)) both exist.
65. ((User NE)) and ((User ne)) both exist.
66. ((User NIU)) and ((User niu)) both exist.
67. ((User NL)) and ((User nl)) both exist.
68. ((User NS)) and ((User ns)) both exist.
69. ((User NYU)) and ((User nyu)) both exist.
70. ((User OC)) and ((User oc)) both exist.
71. ((User OS)) and ((User os)) both exist.
72. ((User PA)) redirects to ((User Pará)), whereas ((User pa)) exists.
73. ((User Pi)) and ((User pi)) both exist.
74. ((User Pirate)) and ((User pirate)) both exist.
75. ((User PL)) and ((User pl)) both exist.
76. ((User PS-3)) and ((User ps-3)) both exist.
77. ((User PY)) and ((User py)) both exist.
78. ((User RPG)) redirects to Wikipedia:WikiProject Role-playing games/Userbox, whereas ((User rpg)) exists.
79. ((User RU)) and ((User ru)) both exist.
80. ((User run)) redirects to ((User rn)), whereas ((User RUN)) exists.
81. ((User SAD)) and ((User sad)) both exist.
82. ((User SC)) and ((User sc)) both exist.
83. ((User SCA)) and ((User sca)) both exist.
84. ((User SE)) and ((User se)) both exist.
85. ((User SI-0)) and ((User si-0)) both exist.
86. ((User Skype)) and ((User skype)) both exist.
87. ((User Solar System)) and ((User solar system)) both exist.
88. ((User SVG)) and ((User svg)) both exist.
89. ((User TH)) and ((User th)) both exist.
90. ((User UCD)) and ((User ucd)) both exist.
91. ((User UK-3)) and ((User uk-3)) both exist.
92. ((User UK)) and ((User uk)) both exist.
93. ((User UPS)) and ((User ups)) both exist.
94. ((User UU)) and ((User uu)) both exist.
95. ((User UVA)) and ((User UvA)) both exist.
96. ((User UWA)) and ((User uwa)) both exist.
97. ((User UWS)) and ((User uws)) both exist.
98. ((User Vim)) and ((User vim)) both exist.
99. ((User Wiki)) and ((User wiki)) both exist.
100. ((User yahoo)) redirects to ((User Yahoo! Messenger)), whereas ((User Yahoo)) exists.