No, lip kissing your wife is not haram (forbidden) in Islam.
According to Islamic teachings, intimate physical activities between husband and wife are permissible as long as they are considered halal (lawful). This includes kissing, hugging, and explicit speech. As stated in the reference: Husband and wife can kiss each other and may indulge in any intimate physical activity that Allah and his messenger peace be upon him declared as halal. Kissing is one of them, hugging, kissing, explicit speech etc are all permissible.19-Dec-2023
Therefore, kissing your wife, including lip kissing, falls within the boundaries of what is permissible in Islam.
