(, ML1A) Melatonin receptor 1B (, ML1B) Neurokinin receptor Tachykinin receptor 1 (, NK1R) Tachykinin receptor 2 (, NK2R) Tachykinin receptor 3 (, NK3R) Neuropeptide Y receptor Neuropeptide Y receptor Y1 (, NY1R) Neuropeptide Y receptor Y2 (, NY2R) Pancreatic polypeptide receptor 1 (, NY4R) Neuropeptide Y receptor Y5 (, NY5R) Prolactin-releasing peptide receptor (PRLHR, GPRA) Prokineticin receptor 1 (, GPR73) Prokineticin receptor 2 (, PKR2) GPR19 (, GPRJ) GPR50 (, ML1X) GPR75 () GPR83 (, GPR72) Subfamily A10 Glycoprotein hormone receptor FSH-receptor () Luteinizing hormone/choriogonadotropin receptor (, LSHR) Thyrotropin receptor () Leucine-rich repeat-containing G protein-coupled receptor 4 (, GPR48) Leucine-rich repeat-containing G protein-coupled receptor 5 (, GPR49) Leucine-rich repeat-containing G protein-coupled receptor 6 () Subfamily A11 GPR40-related receptor Free fatty acid receptor 1 (, GPR40) Free fatty acid receptor 2 (, GPR43) Free fatty acid receptor 3 (, GPR41) GPR42 (, FFAR1L) P2 purinoceptor Purinergic receptor P2Y1 () Purinergic receptor P2Y2 () Purinergic receptor P2Y4 () Purinergic receptor P2Y6 () Purinergic receptor P2Y8 () Purinergic receptor P2Y11 () Hydroxycarboxylic acid receptor 1 (, GPR81) Hydroxycarboxylic acid receptor 2, Niacin receptor 1 (, GPR109A) Hydroxycarboxylic acid receptor 3, Niacin receptor 2 (, GPR109B, HM74) GPR31 (, GPRV) GPR82 () Oxoglutarate (alpha-ketoglutarate) receptor 1 (, GPR80) Succinate receptor 1 (, GPR91) Subfamily A12 P2 purinoceptor Purinergic receptor P2Y12 () Purinergic receptor P2Y13 (, GPR86) Purinergic receptor P2Y14 (, UDP-glucose receptor, KI01) GPR34 () GPR87 () GPR171 (, H963) Platelet-activating factor receptor (, PAFR) Subfamily A13 Cannabinoid receptor Cannabinoid receptor 1 (brain) (, CB1R) Cannabinoid receptor 2 (macrophage) (, CB2R) Lysophosphatidic acid receptor Lysophosphatidic acid receptor 1 () Lysophosphatidic acid receptor 2 () Lysophosphatidic acid receptor 3 () Sphingosine 1-phosphate receptor Sphingosine 1-phosphate receptor 1 () Sphingosine 1-phosphate receptor 2 () Sphingosine 1-phosphate receptor 3 () Sphingosine 1-phosphate receptor 4 () Sphingosine 1-phosphate receptor 5 () Melanocortin/ACTH receptor Melanocortin 1 receptor (, MSHR) Melanocortin 3 receptor () Melanocortin 4 receptor () Melanocortin 5 receptor () ACTH receptor (), ACTR) GPR3 () GPR6 () GPR12 (, GPRC) Subfamily A14 Eicosanoid receptor Prostaglandin D2 receptor (, PD2R) Prostaglandin E1 receptor (, PE21) Prostaglandin E2 receptor (, PE22) Prostaglandin E3 receptor (, PE23) Prostaglandin E4 receptor (, PE24) Prostaglandin F receptor (, PF2R) Prostaglandin I2 (prostacyclin) receptor (, PI2R) Thromboxane A2 receptor (, TA2R) Subfamily A15 Lysophosphatidic acid receptor Lysophosphatidic acid receptor 4 () Lysophosphatidic acid receptor 5 () Lysophosphatidic acid receptor 6 () P2