Ohio law consists of the Ohio Constitution, the Ohio Revised Code| codes.ohio.gov
(A) Except as provided in section 3101.02 of the Revised Code, only male persons of the age of eighteen years, and only female persons of the age of eighteen years, not nearer of kin than second cousins, and not having a husband or wife living, may be joined in marriage. A marriage may only be entered into by one man and one woman.| codes.ohio.gov
Only a union between one man and one woman may be a marriage valid in or recognized by this state and its political subdivisions. This state and its political subdivisions shall not create or recognize a legal status for relationships of unmarried individuals that intends to approximate the design, qualities, significance or effect of marriage.| codes.ohio.gov
The chancellor of higher education shall: | codes.ohio.gov