Gay rights in Japan sit in an unusual position: there is no national law recognizing same-sex marriage and no comprehensive ban on discrimination based on sexual orientation, yet partnership certificate systems now cover about 92.5 percent of the population, every high court to rule on the marriage ban has found it unconstitutional, and in March 2026 the Supreme Court’s Grand Bench announced it will decide the question for the country. What follows is where things actually stand for LGBTQ+ people living in or moving to Japan.
Same-Sex Marriage Is Not Legal Nationally
Japanese law does not allow same-sex couples to marry. Two provisions of the Constitution anchor the dispute. Article 14 guarantees equality under the law and bars discrimination based on race, creed, sex, social status, or family origin.1The House of Representatives, Japan. The Constitution of Japan Article 24 says marriage “shall be based only on the mutual consent of both sexes.”2Japanese Law Translation. The Constitution of Japan Conservative lawmakers read Article 24 as locking marriage to one man and one woman. Advocates argue it was written to protect individual consent from forced family-arranged marriages, not to exclude same-sex couples.
What the Courts Have Said
Since 2021, same-sex couples have challenged the ban in court. The district court results were mixed: Sapporo found the ban unconstitutional in March 2021 under Article 14; Nagoya followed in May 2023, citing Articles 14 and 24; Tokyo and Fukuoka found a “state of unconstitutionality,” signaling the Diet must act. Osaka alone, in June 2022, upheld the ban, reasoning that marriage in the Civil Code has historically been linked to procreation.
The high courts have been uniform. Every one to rule has found a constitutional violation:
- Sapporo High Court (March 2024): first high court to find the ban unconstitutional, citing Article 24.
- Tokyo High Court (October 2024): found violations of Articles 14 and 24, holding that forming a legal spousal relationship is an important interest tied to personal being.
- Fukuoka High Court (December 2024): found violations of Articles 13, 14, and 24, stating that “unless same-sex couples are granted access to the same legal marriage system as heterosexual couples, the violation of Article 14 of the Constitution cannot be resolved.”
- Nagoya High Court (March 2025): ruled that excluding same-sex couples “lacks a reasonable basis and constitutes unlawful discrimination,” citing Articles 14 and 24.
None of these courts awarded damages, reasoning that public awareness of the need for legislative action is relatively recent.
The Supreme Court’s Grand Bench Review
In March 2026, the Supreme Court announced that its Grand Bench, consisting of all 15 justices, will deliberate whether the marriage ban violates the Constitution. A Grand Bench ruling binds the entire country and could force the Diet to legislate.
Partnership Certificates at the Local Level
With no national recognition, municipalities built their own system. Tokyo’s Shibuya and Setagaya wards began issuing partnership certificates in 2015, and by mid-2025 roughly 530 municipalities had adopted similar programs, covering about 92.5 percent of the population. The Tokyo Metropolitan Government runs a partnership oath system in which the governor certifies that a couple has registered.3Tokyo Metropolitan Government. Tokyo Partnership Oath System User Guide
A certificate helps with municipal hospital visitation, joint rental agreements, and in some cases employer family benefits. It carries no force under national law. Holders remain legal strangers for inheritance under the Civil Code, spousal tax benefits, and immigration status. A foreign partner cannot obtain a spousal visa based on a municipal certificate.
Anti-Discrimination Law Is Limited
Japan has no comprehensive national law banning discrimination against LGBTQ+ people in employment, housing, or public accommodations. The Act on the Promotion of Public Understanding of the Diversity of Sexual Orientation and Gender Identity, passed by the Diet in June 2023, is the closest thing at the national level.4Japanese Law Translation. Act on the Promotion of Public Understanding of the Diversity of Sexual Orientation and Gender Identity (Act No. 68 of 2023) Its stated purpose is to promote public understanding. It does not create enforceable rights, impose penalties, or give victims a path to damages in court.
Local ordinances fill part of the gap. Tokyo enacted an ordinance in 2018 prohibiting unfair discrimination based on gender identity or sexual orientation, tied to the human rights principles of the Olympic Charter.3Tokyo Metropolitan Government. Tokyo Partnership Oath System User Guide Other municipalities have followed, but scope and enforcement vary. Whether you have meaningful legal recourse depends on where you live.
Transgender Legal Recognition
Japan allows a person to change their legal gender marker under the Act on Special Cases in Handling Gender for People with Gender Identity Disorder, Law No. 111 of 2003.5International Commission of Jurists. Act on Special Cases in Handling Gender for People with Gender Identity Disorder The law originally set five conditions: be at least 18, be unmarried, have no minor children, have no functioning reproductive organs, and have genitalia resembling those of the desired gender.
In October 2023, the Supreme Court unanimously struck down the sterilization requirement as unconstitutional. The ruling was narrow. It did not resolve the constitutionality of the separate requirement on genital appearance, which was sent back to lower courts.
The remaining requirements still block many people. The unmarried condition forces transgender people in existing marriages to choose between their legal identity and their marriage. The minor-child restriction prevents parents of children under 18 from obtaining legal recognition.5International Commission of Jurists. Act on Special Cases in Handling Gender for People with Gender Identity Disorder
Parenting and Adoption
Only married couples can jointly adopt a child under the Civil Code. Because same-sex couples cannot marry nationally, only one partner can be a child’s legal parent. The other partner has no custody rights, no authority over medical decisions, and no legal relationship to the child for inheritance.
Foster care is more open. Osaka became the first city to certify a same-sex couple as foster parents in December 2016. No Japanese law explicitly bars same-sex couples from fostering, but approval runs through local child consultation centers and welfare review panels, and willingness varies by region. Foster care does not create a permanent legal bond. The Nagoya High Court in its 2025 ruling noted that children raised by same-sex couples face serious risks in medical and legal situations because only recognized family members can act on their behalf.
Immigration for Same-Sex Couples
Japan does not issue a spouse visa to same-sex partners. The standard spouse visa is tied to marriage under Japanese law.
For foreign same-sex couples legally married abroad, there is a possible route through the Designated Activities visa. A 2013 internal memo from the Ministry of Justice reportedly indicated that if a same-sex marriage is legally registered in the couple’s home country, the foreign spouse may apply for this status. Approvals are handled case by case at the discretion of immigration officers.
Where one partner is Japanese, the situation is murkier. The 2013 memo was understood to apply primarily to couples where both partners are foreign nationals. A 2022 court ruling found that denying this status to Japanese-foreign same-sex couples was discriminatory, but no formal policy change followed. Some Japanese-foreign couples have reportedly obtained the visa; the process remains unpredictable and poorly documented. The Designated Activities visa itself typically carries work restrictions similar to a dependent visa and is generally not treated as a path to permanent residency.
Inheritance and Estate Planning
Because same-sex partners are not recognized as spouses or statutory heirs, a surviving partner inherits nothing automatically under the Civil Code. To leave assets to a partner, you need a will naming the partner as a beneficiary. Even then, the transfer is classified as a bequest rather than an inheritance, which triggers a 20 percent surcharge on the standard inheritance tax, and the partner does not qualify for the spousal deduction available to married couples.
Some couples use adult adoption. One partner legally adopts the other, placing both on the same family registry and giving the adopted partner full inheritance rights, hospital visitation, and medical decision-making authority. The trade-off is significant: it reshapes a romantic partnership into a legal parent-child relationship, and it cannot easily be undone if the couple later gains the right to marry.
Notarized legal agreements are another option. Couples can draft documents at a local notary office covering powers of attorney, medical decision-making, and property arrangements. These have not been widely tested in court, and their enforceability in an emergency, when a hospital or institution must decide quickly who has authority, remains uncertain. Until the law changes, protecting a same-sex partner in Japan means assembling a patchwork of wills, notarized contracts, and sometimes adoption to approximate what a marriage certificate would do automatically.