The pong lang (Thai: โปงลาง, RTGS: ponglang, Thai pronunciation: [pōːŋ.lāːŋ]) is a xylophone from the Isan region of northeast Thailand.

[2] The instrument is not standardized and the number of tone bars and their size can vary.

[2] Unlike the ranat ek lek and ranat thum lek which are strung over a box, the pong lang is hung from a post or tree with the string of tone bars arcing down toward the ground.

The wider bars with lower pitch sit at the top of the string and the other end (with smaller high-pitched bars) may be hooked to the player's toe or to a belt around the player's waist.

[2] When there are two performers, they may sit on opposite sides of the post, facing one another.