Ohio does not have a crime called incest. Instead, Ohio incest laws operate through two separate statutes: a sexual battery provision that makes sexual activity between a parent figure and the person in their care a felony, and a marriage statute that forbids weddings between relatives closer than second cousins. The criminal rule is narrower than most people assume about which family ties it reaches, but a conviction brings prison time and lifetime sex offender registration.
Which Family Relationships the Criminal Law Covers
Under Ohio Revised Code 2907.03(A)(5), sexual activity is a felony when it occurs between a person and their biological parent, adoptive parent, stepparent, legal guardian, legal custodian, or anyone acting in the role of a parent (known legally as “in loco parentis”).1Ohio Legislative Service Commission. Ohio Code 2907.03 – Sexual Battery The “in loco parentis” category is broad enough to reach a live-in partner of a parent who has taken on parental duties, even without a formal legal relationship.
The statute applies regardless of consent and regardless of whether both people are adults. A 40-year-old and their 60-year-old biological parent can both be charged. Ohio treats the parent-child hierarchy as something that does not dissolve with age.
One detail surprises many people: the statute does not list siblings, grandparents, aunts, uncles, or cousins. Those relationships are addressed through the marriage restrictions discussed below and, when a minor is involved, through other sex offense statutes. The family-focused sexual battery provision itself is limited to parent-figure and child-figure dynamics.1Ohio Legislative Service Commission. Ohio Code 2907.03 – Sexual Battery
What Counts as Sexual Activity
The statute prohibits all “sexual activity,” which Ohio law defines as both sexual conduct and sexual contact.2Ohio Legislative Service Commission. Ohio Revised Code Chapter 2907 – Sex Offenses Penetration is not required.
Sexual conduct covers intercourse, oral sex, and any penetration of the body. Sexual contact covers touching an intimate area for sexual gratification, even without penetration. Both are illegal between the family members listed above, and the distinction drives the severity of the charge.2Ohio Legislative Service Commission. Ohio Revised Code Chapter 2907 – Sex Offenses
Prison Time and Fines
The felony degree depends on the type of activity and the age of the other person:
- Sexual conduct with an adult is a third-degree felony, carrying a prison term of 12 to 60 months.1Ohio Legislative Service Commission. Ohio Code 2907.03 – Sexual Battery3Ohio Legislative Service Commission. Ohio Revised Code 2929.14 – Definite Prison Terms
- Sexual conduct with a victim aged 13 to 17 is a second-degree felony with a mandatory prison term.1Ohio Legislative Service Commission. Ohio Code 2907.03 – Sexual Battery
- Sexual contact with an adult is a fifth-degree felony.1Ohio Legislative Service Commission. Ohio Code 2907.03 – Sexual Battery
- Sexual contact with a victim under 18 is a fourth-degree felony.1Ohio Legislative Service Commission. Ohio Code 2907.03 – Sexual Battery
ORC 2929.14 specifically lists sexual battery among the offenses that carry an enhanced third-degree range of 12 to 60 months rather than the standard 9 to 36 months.3Ohio Legislative Service Commission. Ohio Revised Code 2929.14 – Definite Prison Terms Courts can also impose fines up to $10,000 for a third-degree felony conviction.
Lifetime Sex Offender Registration
When the sexual activity involved is sexual conduct, conviction triggers classification as a Tier III sex offender, the most restrictive category under Ohio law.4Ohio Legislative Service Commission. Ohio Revised Code 2950.01 – Sexual Predators, Habitual Sex Offenders, Sexually Oriented Offenders Tier III registration lasts for life and requires in-person verification with the local sheriff every 90 days. If you move to a new county, you must send written notice to that county’s sheriff at least 20 days before you begin living there.5Ohio Legislative Service Commission. Ohio Code 2950.04 – Duty to Register
Tier III offenders are also subject to community notification. The sheriff notifies neighbors, schools, daycares, and other organizations within a designated area around the offender’s residence, and the state maintains a publicly searchable online registry.6Ohio Legislative Service Commission. Ohio Revised Code Chapter 2950 – Sexual Predators, Habitual Sex Offenders, Sexually Oriented Offenders Every new neighbor, employer, or landlord can look it up.
Missing a registration deadline or providing false information is a separate felony. Under ORC 2950.99, the degree of the new felony matches the degree of the underlying sex offense, so someone originally convicted of a third-degree felony sexual battery faces another 12 to 60 months in prison for a failure to register. Prior registration violations push the penalty higher.7Ohio Legislative Service Commission. Ohio Revised Code 2950.99 – Penalties
Loss of Parental Rights
A sexual battery conviction can permanently sever your legal relationship with a child conceived through the offense. Under ORC 3109.504, no Ohio court may grant parental rights to a person convicted of sexual battery when the child was conceived through that crime. If a court previously granted parental rights and later receives notice of the conviction and parentage determination, the court must terminate those rights.8Ohio Legislative Service Commission. Ohio Code 3109.504 – Granting of Parental Rights Prohibited
Beyond that specific statute, Tier III status weighs heavily in any custody or visitation proceeding, and the community notification requirement means the issue cannot be kept quiet from other parties in family court.
Passport and International Travel
Federal consequences follow a Tier III registrant across borders. Under the International Megan’s Law (22 U.S.C. 212b), the State Department must place a unique visual identifier on the passport of any registered sex offender. The marking stays as long as registration is required and cannot be removed or hidden.9Office of the Law Revision Counsel. 22 USC 212b – Unique Passport Identifiers for Covered Sex Offenders Foreign officials who scan the passport are alerted, which can lead to denial of entry, extra screening, or deportation.
Registered offenders must also notify their registration jurisdiction at least 21 days before any international travel. Failing to provide that notice can result in federal prosecution carrying up to 10 years in prison.9Office of the Law Revision Counsel. 22 USC 212b – Unique Passport Identifiers for Covered Sex Offenders
Who Can Marry Whom in Ohio
Separate from the criminal code, Ohio limits marriage based on how closely two people are related. ORC 3101.01 requires that the parties be “not nearer of kin than second cousins” to obtain a marriage license. That bars marriages between parents and children, grandparents and grandchildren, siblings, aunts or uncles and nieces or nephews, and first cousins. Second cousins and more distant relatives may marry. First cousins are closer than second cousins, so first-cousin marriage is not allowed in Ohio.10Ohio Legislative Service Commission. Ohio Code 3101.01 – Persons Who May Be Joined in Marriage
The marriage restriction reaches further than the sexual battery statute. ORC 2907.03(A)(5) criminalizes only parent-figure sexual activity, but the marriage bar covers every relative closer than a second cousin. A marriage that violates the rule has no legal standing and carries none of the usual civil benefits, including inheritance rights, spousal privilege, and insurance coverage. Those civil consequences apply whether or not any criminal charges are ever filed.