The leukotriene (LT) receptors are G protein-coupled receptors that bind and are activated by the leukotrienes. They include the following proteins:
* Leukotriene B4 receptors (BLTRs) – bind to and are activated by LTB4:
** BLT (Leukotriene B receptor 1)  – 
** BLT (Leukotriene B receptor 2)  – 
* Cysteinyl leukotriene receptors (CysLTRs) – bind to and are activated by LTC4, LTD4, and LTE4:
** CysLT (Cysteinyl leukotriene receptor 1) – 
** CysLT (Cysteinyl leukotriene receptor 2) – 
The recently elucidated CysLT, represented by GPR99/OXGR1, may constitute a third CysLTR.