New Hampshire
Summary: An adult may be adopted with own consent and consent of spouse (if married).
Most Relevant New Hampshire Statutes:
§ 170-B:3
§ 170-B:5
§ 170-B:6
170-B:3. Who may be adopted.
Any individual may be adopted.
170-B:5. Persons Required to Consent to Adoption.
I. Consent to any proposed adoption shall be obtained from:
(a) The child to be adopted if the child is 12 years of age or over;
(h) The spouse of the adult to be adopted.
170-B:6. Persons not Required to Consent.
Consent to adoption is not required of:
IV. Any parent of the individual to be adopted, if the individual to be adopted is an adult;