Polygyny (frae Neoclessical Greek πολυγυνία frae πολύ- poly- "mony", an γυνή gyne "woman" or "wife") is the maist common an acceptit form o polygamy, entailin the mairiage o a man wi several weemen. Maist kintras that permit polygamy are Muslim-majority kintras in which polygyny is the anerly form permittit. Polyandry is illegal in virtually every state o the warld.
In some kintras whaur polygamy is illegal, an sometimes even when legal, at times it is kent for men tae hae ane or mair mistresses, that thay dinna mairy. The status o a mistress isna that o a wife, an ony bairns born o such relationships war an some still are conseedert illegitimate an subject tae legal disadvantage.