Cousin in Thai is ลูกพี่ลูกน้อง (lôok pêe lôok nóng). However, you can also refer to your cousins as ญาติ (yâat) which actually means relatives.

Cousin in Thai

As mentioned, ลูกพี่ลูกน้อง (lôok pêe lôok nóng) means cousin in Thai.

ลูกพี่ลูกน้อง is an interesting word because ลูก (lôok) means child, พี่ (pêe) means older person, น้อง (nóng) is younger person. In this case, พี่ and น้อง are referring to your aunts and uncles. So it means the kids of your aunts and uncles.