GM, COT❣️ Yuzunoko here.
Have you decided on your Halloween costume yet?
On October 22, 2026, the Japanese Red Cross Society issued a reminder about the "Red Cross emblem." Each year the Society sees the emblem used on Halloween costumes such as nurse outfits, and the reminder restates what the emblem actually means. The short version: using the Red Cross emblem on a costume is prohibited by law, and similar marks are treated the same way.
(It really is tempting to add a red cross to something white, isn't it?)
The Red Cross Emblem Is Not a Hospital Symbol
According to the Japanese Red Cross Society, the emblem is used to protect people wounded in conflict, together with the military medical units and the Red Cross relief workers and facilities that care for them. The Geneva Conventions, the international rules of humanitarian law, state firmly that hospitals and relief workers displaying the emblem must never be attacked.
The Society's page on the emblem notes that many people assume it stands for hospitals or medicine. It does not work as a general medical symbol.
The Law Sets Out a Penalty as Well
In Japan, use of the emblem is governed by the Act on Restriction of the Use of the Red Cross Emblem and Name (Act No. 159 of 1947). It was promulgated on December 10, 1947 and came into force on January 1, 1948. The full text is available on e-Gov Legal Search.
Article 1 covers the red cross, red crescent and red lion and sun emblems, the names Red Cross and Geneva Cross, and "similar badges or names," and says they must not be used without due cause. Names are covered alongside the pictures, which is the point to note.
Article 4 sets the penalty: a person who breaks Article 1 "shall be punished by a custodial sentence of not more than six months or a fine of not more than 300,000 yen."
(Plenty of explainers still say "penal servitude," but the wording in force is "custodial sentence.")
Penal servitude and imprisonment without work were abolished on June 1, 2025, when the custodial sentence was created in their place; the Ministry of Justice's page says the same. Older explainers have not caught up with that change.
According to the Society's notice of October 5, 2022, similar marks are also covered by Article 1 of this Act and by Article 4 of the Trademark Act.
Only Designated Organisations May Use It
The Society says that inside Japan the emblem may be used only by the Japanese Red Cross Society, Self-Defense Forces medical units and other organisations authorised by law.
The six uses the Society lists as prohibited are:
- Hospitals and clinics, other than Red Cross hospitals
- Pharmacies
- First-aid kits, medicine boxes and medicine bottles sold to the public
- T-shirts, sweatshirts and bags sold to the public
- Company emblems and product brand marks
- Displays that simply evoke medicine, nursing or first aid
The press release puts it plainly: the emblem must not be used on a costume nurse outfit, and attaching it to ordinary hospitals or to goods is likewise prohibited by law.
Article 3 allows one exception: the emblem may be used, with the Society's permission, to mark a station devoted solely to the free nursing of the sick and wounded. A Halloween costume does not fall under it.
Pink or Tilted Crosses Are Out Too
The Society says marks that resemble the Red Cross are restricted as well. Four things make a mark similar:
- The cross is red, or any shade of red, including pink
- The background is white, or any shade of white
- The cross is tilted, or its length or shape has been changed
- People look at it and wonder, "is that the Red Cross emblem?"
The press release adds that a "Red Cross emblem" in a reddish colour such as pink cannot be used on a costume either.
(So changing the colour does not fix it.)
Why the Rules Are Strict When the Shape Is Not Fixed
The emblem has no rigid standard for its dimensions, shape or shade. In the confusion of conflict it cannot always be drawn precisely.
Fixing a strict standard would put people at risk: a unit displaying the emblem could be attacked on the grounds that its size, shape or shade was slightly off. Because the emblem exists to protect lives, no strict standard was set.
With no standard to point to, the test becomes whether people read the mark as the Red Cross emblem. That is why similar marks are restricted too.
Besides the red cross, there are the red crescent and the red crystal (a red diamond on a white ground). The Society explains that many Islamic countries use the red crescent because a cross suggests Christianity, and that its conditions and effect are exactly the same as the red cross.
What to Do With the Costume
The Society's advice is to enjoy a costume without the emblem. Akihiko Saito of the Planning Section, International Department, who worked on the release, said: "We hope you will think about the meaning behind the emblem and enjoy your costume without the Red Cross emblem."
If you are buying a nurse costume, check before you pay that it has no red cross on it. The same goes for first-aid kit props and medical-themed accessories: it is safer not to paint a red cross on them. A heart or a star keeps the look without the mark.
Halloween is on October 31, and the events are about to start. Ikebukuro Halloween Cosplay Fest 2026 runs for three days, from October 30 to November 1. The rules on bringing costumes and on photography are collected in Ikebukuro Halloween Cosplay Fes 2026 Runs for 3 Days from Oct 30: Ikehalo Night, Tickets, Parade Applications, and Participation Rules Summary.
About This Article
This article is based on the Japanese Red Cross Society's press release of October 22, 2026, its page on the emblem, its notice of October 5, 2022, the text of the Act on e-Gov Legal Search, and the Ministry of Justice's page on the custodial sentence. The law is described only as far as those sources go; the article does not judge whether any particular costume breaks it.
Sources: Re-learning the meaning and rules of the "Red Cross emblem" (Japanese Red Cross Society, October 22, 2026), Meaning and rules of the Red Cross emblem (Japanese Red Cross Society), Significance and use of the Red Cross emblem (Japanese Red Cross Society, October 5, 2022), Act on Restriction of the Use of the Red Cross Emblem and Name (Act No. 159 of 1947), Correctional treatment under the new custodial sentence (Ministry of Justice)
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