Lymphangiomas are uncommon benign lesions resulting from lymphatic system malfunction or inflammation, leading to obstruction. They can emerge at various anatomical sites, with abdominal cases comprising only 5% of all instances, often found in the mesentery, gastrointestinal system, spleen, liver, and occasionally the retroperitoneum. Despite being rare, abdominal lymphangiomas tend to manifest in childhood and exhibit a gender prevalence in boys. While generally benign, they can cause local spread and pose diagnostic challenges due to their varied presentation. A case report of a 30-year-old female is presented. She had gradually increasing abdominal distension, and imaging revealed a sizable cystic lesion with internal septations in the omental region, likely an Omental Lymphangioma. Surgical excision was undertaken, and histopathological analysis confirmed the diagnosis. Lymphangiomas' origin is still debated, stemming mainly from congenital defects or acquired obstruction. Imaging plays a pivotal role in diagnosis, although distinguishing lymphangiomas from other cystic lesions remains complex. Treatment involves surgical removal, often complicated by potential local invasion. Recurrence necessitates careful follow-up. The presented case underscores the rarity and diverse clinical aspects of omental lymphangiomas, advocating for thorough evaluation and surgical intervention as the primary treatment strategy.