Private, adult, consensual, and non-commercial sodomy was decriminalized in Thailand in 1956. However, same-sex attraction and transgender identities were still seen as socially unacceptable in many cases: those whose gender expression or behavior falls out of social norms are less likely to be tolerated or accepted. Through the Penal Code Amendment Act of 1997 (Thai: พระราชบัญญัติแก้ไขเพิ่มเติมประมวลกฎหมายอาญา-(ฉบับที่-14)-พ.ศ.-2540), the age of consent was set at fifteen years regardless of gender or sexual orientation. In 2002, the Ministry of Health announced that homosexuality would no longer be regarded as a mental illness or disorder. In 2007, the Thai Government expanded the definition of a sexual assault and rape victim to include both women and men. The government also prohibited marital rape, with the law stipulating that women or men can be victims.

On March 27th 2024, the Thailand parliament voted on a bill that would legalize same-sex marriage and it passed. Now that it has passed, it is sent to the Thailand Senate and if it passes there it will still need royal approval. According to many critics, this bill will succeed. However, as of now, gay marriage is still not legal.

In Thailand, there are no laws restricting the discussion or promotion of LGBTQ+ topics.

Sex reassignment surgery is legal in Thailand, however Thai law does not allow for gender to be changed on legal documents such as ID. Date shown is when Thailand became a constitutional monarchy.

In 1994, Thailand adopted the ICD-10 classification, which contains codes for diagnosing transsexualism in adulthood and childhood, which authorize the initiation of medical transition.

Thailand doesn't allow changing legal gender.

The Thai Constitution (unsure which one) prohibits discrimination based on sexual orientation and gender identity.

Under Thailand Criminal Code.

Under the revision of Thailand Criminal Code.

Adoption is only allowed for married couples, and same-sex marriage isn't allowed either. Therefore, gay people can’t adopt in Thailand.

Not criminalized.

Date shown is when US banned gay male blood donations.

Not criminalized in Thailand.