Editing M1 helmet (section)

=== Current ===
[[file:191110-F-VD052-0149.jpg|thumb|A [[Turkish Air Force]] serviceman wearing a ceremonial M1 liner during an [[Mustafa Kemal Atatürk|Atatürk]] Memorial Day ceremony at [[Anıtkabir]] in 2019]]
[[file:Victory Day Parade, Dhaka, Bangladesh 2011.jpg|thumb|[[Bangladesh Army]] infantry wearing M1 helmets during a [[Victory Day (Bangladesh)|Victory Day]] parade in 2011]]

* {{flag|Republic of China (1912–1949)|name=China, Republic of}}: Used by the [[Republic of China Army]] during the [[Second Sino-Japanese War]] and the [[Chinese Civil War]]; issued as a combat helmet by [[Taiwan]] until the 1990s.<ref>{{cite web |title=Taiwan M1 |url=http://brendonshelmets.weebly.com/taiwan-m1.html |website=Brendon's Helmets}}</ref> Remains in use as a ceremonial helmet.
* {{flag|Colombia}}: Some M1 helmets still in service with the [[Military Forces of Colombia|Military Police]] and ceremonial units.<ref>{{cite web|url=http://mahargpress.com/military-helmets/chapters-summaries/south-america/colombia/|title=Colombia}}</ref>
* {{flag|Dominican Republic}}: Only used by [[honor guards]] in the [[Armed Forces of the Dominican Republic]].<ref>{{cite web|url=http://mahargpress.com/military-helmets/chapters-summaries/central-america/dominican-republic/|title=Dominican Republic}}</ref>
* {{flag|India}}: M1 helmets are produced locally and are still in service with some [[Indian Armed Forces]] and [[Indian Police Service]] units.<ref>{{cite web|url=http://brendonshelmets.weebly.com/india-m1.html|title=India M1|website=Brendon's Helmets}}</ref>
* {{flag|Iran}}: West German-made M1 helmets<ref>{{Cite web |url=http://brendonshelmets.weebly.com/iran-m62.html |title=Iran M62}}</ref> were used by the [[Imperial Iranian Army]] until the [[Iranian revolution]].<ref name="Iran">{{Cite web |date=16 October 2016 |title=WWII weapons in the Ayatollah's Iran |url=https://wwiiafterwwii.wordpress.com/2016/10/16/wwii-weapons-in-the-ayatollahs-iran/}}</ref> They remained in use with the [[Islamic Republic of Iran Armed Forces]] until its eventual official retirement,{{When|date=February 2025}} though some examples are reportedly still in use.<ref name="Iran" />
* {{flag|Guatemala}}: Used only by the [[Armed Forces of Guatemala|Guatemalan Army and Navy]].<ref>{{cite web|url=http://mahargpress.com/military-helmets/chapters-summaries/central-america/guatemala/|title=Guatemala}}</ref>
* {{flag|Japan}}: Formerly used M1 helmets supplied by the U.S. until 1966,<ref>{{cite web |url=http://rightwing.sakura.ne.jp/equipment/jgsdf/quartermaster/type66helmet/type66helmet.html |script-title=ja:66式 鉄帽 |website=rightwing.sakura.ne.jp |language=ja}}</ref> when the [[Japan Self-Defense Forces]] began issuing the [[Type 66 helmet]], a locally produced variant. The Type 66 was replaced in frontline service by the Type 88 helmet in 1988, though they remain in use for non-combat roles and operations.<ref>{{Cite web|url=https://www.mod.go.jp/j/procurement/chotatsu/nds/pdf/z/z8001.pdf|title=Ministry of Defense specification sheet, LINER, GROUND TROOPS' HELMET|date=2014-04-23|author=Ministry of Defense (Japan)|author-link=Ministry of Defense (Japan)|language=ja}}</ref><ref>{{Cite web|url=http://www.clearing.mod.go.jp/kunrei_data/f_fd/1967/fy19680228_00024_008.pdf|title=Ground Self-Defense Forces Dress Manual|date=2014-03-28|author=Ministry of Defense (Japan)|language=ja}}</ref>
* {{flag|Panama}}: Used by the former [[Panamanian Public Forces#History|Panamanian militaries]], with some units reportedly still used by the Panamanian Public Forces.<ref>{{cite web|url=http://mahargpress.com/cascos-militares/sumario-del-capitulo/centroamerica/panama-2/|title=Panama}}</ref>
* {{flag|Philippines}}: Formerly used by the [[Armed Forces of the Philippines]] as a frontline combat helmet.<ref>{{cite web |title=Phil. Marines PASGT helmet |url=http://www.oocities.org/pmcmssr/pmhelmet1.html |website=www.oocities.org}}</ref> Remains in limited use as a training helmet.
* {{flag|South Korea}}: Used by the [[Republic of Korea Armed Forces]] during the [[Korean War]] and the [[Vietnam War]]. Replaced by the [[Bangtan Helmet]], which is loosely based on the M1 helmet.
* {{flag|Turkey}}: Used by the [[Turkish Armed Forces]] before being retired from frontline service; currently remains in use as a ceremonial helmet.<ref>{{cite web|title=Turkey M1 Airborne|url=http://brendonshelmets.weebly.com/turkey-m1-airborne.html|website=Brendon's Helmets}}</ref><ref name="nyc-techwriters">{{cite web|title=Military Collection of Peter Suciu|url=http://www.nyc-techwriters.com/militaria/turkish_helmets.htm|url-status=live|archive-url=https://web.archive.org/web/20150415225642/http://www.nyc-techwriters.com/militaria/turkish_helmets.htm|archive-date=15 April 2015|access-date=5 September 2015|publisher=nyc-techwriters.com}}</ref>
* {{flag|Uruguay}}: First units delivered between 1942 and 1945, with limited examples reportedly still in use by the [[Armed Forces of Uruguay]].<ref>{{cite web|url=http://mahargpress.com/military-helmets/chapters-summaries/south-america/uruguay/|title=Uruguay}}</ref>
* {{flag|Vietnam}}: Some M1 helmets are still used by the [[People's Army of Vietnam]], many of which were captured from American and South Vietnamese inventories during and after the Vietnam War.<ref>{{Cite web|url=https://soha.vn/quan-su/tim-hieu-cac-loai-mu-sat-mu-chong-dan-cua-qdndvn-20140703143923538.htm|title = Tìm hiểu các loại mũ sắt, mũ chống đạn của QĐNDVN| date=5 July 2014 }}</ref>