Trigonella coerulescens (Bieb.) Hal. subsp. kemerensis R.S. Göktürk subsp. nova (Fabaceae) is described from SW Anatolia, Turkey and illustrated. It grows on sandy seashores in Olimpos-Çıralı (Kemer) and Adrasan (Kumluca) beaches. It is closely related to subsp. coerulescens, an endemic taxon confined to Olimpos-Beydağlari National Park. Diagnostic morphological characters of subsp. kemerensis and subsp. coerulescens are discussed.