性別重置手術
Sex reassignment surgery has been legal since 1990. Transgender persons in New Hampshire are allowed to change the gender marker on their birth certificate but require undergoing such surgery to do so. The applicant for a gender change must submit to the City or Town Clerk a birth certificate request form, a photograph, a certified court order indicating that the individual has had "a sex change" and must pay the applicable fees. In July 2019, Governor Chris Sununu vetoed a bill which would have removed some of these restrictions.