Introduction Thyroidectomy remains central to managing benign and malignant thyroid disease and requires precise anatomical understanding to avoid injury to the recurrent laryngeal nerve (RLN), parathyroid (PT) glands, and regional vasculature. While established anatomical triangles - Beahr’s, Joll’s, Lores, and Simon’s - assist surgeons in identifying and protecting key structures, they provide limited guidance at the inferior thyroid pole or for mobilising the entire gland once superior and inferior poles are controlled and PT and RLN preservation present challenges. Aims To describe a novel anatomical landmark, the Thyroid Triangle, and outline its role in improving safety and efficiency during dissection in total and partial thyroidectomy. Methods A conceptual anatomical framework was developed by analysing the spatial relationships between the RLN, trachea, and clavicle during thyroidectomy. Clinical application of Thyroid Triangle was assessed through its relevance to identifying the RLN, mobilising the capsule, and preserving the RLN and PT glands. Intraoperative images are used to demonstrate anatomical and clinical relevance. Results The Thyroid Triangle - bounded by the RLN, trachea, and clavicle - provides a reproducible and intuitive anatomical space that enhances visualisation of the inferior pole. Its use facilitates safer mobilisation of the entire gland once superior and inferior poles are controlled. It improves delineation of critical structures, and may reduce operative complications related to RLN injury, bleeding, or PT devascularisation. Conclusions The introduction of Thyroid Triangle represents a meaningful refinement to thyroidectomy technique. By offering a clear, dependable surgical landmark for inferior pole dissection, it has the potential to improve operative safety, streamline dissection, and support preservation of the RLN and PT glands. Further clinical assessment may validate its utility across varying levels of surgical experience.