Hipertensi pada kehamilan merupakan kondisi peningkatan tekanan darah yang dapat membahayakan ibu dan janin apabila tidak ditangani dengan baik. Salah satu cara non farmakologis untuk membantu menurunkan tekanan darah yaitu dengan konsumsi air kelapa muda. Kandungan kalium dan elektrolit alami dalam air kelapa muda dapat membantu menurunkan tekanan darah. Karya tulis ilmiah ini bertujuan untuk mendeskripsikan penerapan konsumsi air kelapa muda pada ibu hamil trimester III dengan hipertensi melalui studi kasus. Rancangan penelitian menggunakan studi kasus deskriptif. Subjek yang diambil sesuai dengan kriteria inklusi dan eksklusi sebanyak 2 orang ibu hamil trimester III dengan hipertensi. Instrumen yang digunakan yaitu standar prosedur operasional (SPO) pemberian air kelapa muda, format pengkajian keperawatan, dan lembar observasi tekanan darah. Hasil studi kasus menunjukkan bahwa sebelum diberikan konsumsi air kelapa muda, kedua subjek mengalami peningkatan tekanan darah. Setelah diberikan konsumsi air kelapa muda sebanyak 250 ml 2 kali sehari selama 7 hari, terjadi penurunan tekanan darah pada kedua subjek. Hasil penelitian menunjukkan adanya perubahan tekanan darah selama periode intervensi. Berdasarkan hasil studi kasus, konsumsi air kelapa muda berpotensi menjadi salah satu intervensi non farmakologis yang dapat dipertimbangkan dalam asuhan keperawatan pada ibu hamil trimester III dengan hipertensi. Namun, mengingat penelitian ini merupakan studi kasus dengan dua subjek, hasil penelitian hanya menggambarkan kondisi subjek yang diteliti dan belum dapat digeneralisasikan. Hypertension in pregnancy is a condition of increased blood pressure that can be dangerous for the mother and fetus if not managed properly. One non-pharmacological way to help lower blood pressure is by consuming young coconut water. The potassium and natural electrolytes in young coconut water can help lower blood pressure. This scientific paper aims to describe the application of young coconut water consumption in third-trimester pregnant women with hypertension through a case study. The research design uses a descriptive case study. Subjects taken according to the inclusion and exclusion criteria were 2 pregnant women in their third trimester with hypertension. The instruments used were standard operating procedures (SOP) for administering young coconut water, nursing assessment format, and blood pressure observation sheet. The results of the case study showed that before being given young coconut water, both subjects experienced increased blood pressure. After being given 250 ml of young coconut water twice a day for 7 days, there was a decrease in blood pressure in both subjects. The results of the study showed a change in blood pressure during the intervention period. Based on the results of the case study, young coconut water consumption has the potential to be a non-pharmacological intervention that can be considered in nursing care for third-trimester pregnant women with hypertension. However, considering that this research is a case study with two subjects, the results only describe the condition of the subjects studied and cannot be generalized.