Japan
Incest laws were effectively abolished in 1881 with the creation of the new Penal Code. Incest between consenting partners is legal.
Israel
Incest is legal in Israel.[27]
Russia
In Russia, consensual sex between adults, including incest, is not a crime.[18] However, under the Family Code of Russia, persons who are related lineally, siblings, half-siblings, and a stepparent and a stepchild may not marry.[19]
Portugal
Incest is not specifically prohibited under Portuguese law.[17]
France
Napoleon abolished incest laws in France and Belgium. Incest had been legal in these two countries.[5] On 27 January 2010, France reinstated laws against incest, which had been thrown out during the French Revolution as a "religious taboo" over 200 years prior. The new law, however, defines incest as rape or sexual abuse on a minor "by a relative or any other person having lawful or de facto authority over the victim". Incest between consenting adults is not prohibited.[14]
Europe
Most European countries have laws against incest between lineal ancestors/descendants, and between full siblings. However, in most countries these laws are no longer enforced if the incest takes place between consenting adults..[10]
Argentina
In Argentina, incest between individuals who are over the minimum age of consent is not prohibited.[3] Marriage between 3rd degree relatives (avunculate marriage) and beyond is allowed, with the exception of marriage involving lineal ancestors and descendants, which is considered null and void disregarding the degree of separation (parent/offspring, grandparent-grandchild).[4]
Brazil
In Brazil, incest is considered any kind of sexual interaction between two blood related human beings. It has no criminal punishment if the involved are over the age of 14, capable of acting upon their legal rights, and that consent means that the relationship is absent of any kind of coercion or fraud. An uncle or aunt is allowed to have a relationship with a nephew or niece provided that they have a health check.[5]