Anterior knee pain is one of the most common complaints of the patients admitting to the orthopaedic outpatient clinics. In the differential diagnosis, a wide range of pathologies including the patellar tumors should be considered. Giant cell tumor is the most frequently seen primary bony tumor of the patella. Chondroma, aneurysmal bone cyst, osteoid osteoma and osteochondroma are other primary bone tumors of the patella. Metastasis and primary patellar osteosarcomas are the most frequently seen pathologies in the malignant tumors. This pain commonly resembles the pain for the patellar chondromalasia or degenerative osteoarthritis and often results in late diagnosis. Particularly, nocturnal anterior knee pain should be considered as a patellar tumor and lateral radiographs of the patient should be always evaluated. Open biopsy for any diagnostic work-up should be carefully planned and contamination of the peri-articular and/or intra-articular structures with malignant tumoral cells should be prevented using a detailed technique. The treatment for patellar tumors is challenging due to its association with the extansor mechanisms. However, the clinical outcomes of the treatment following the diagnosis are often good thanks to an appropriate treatment modality and mostly benign nature of the patellar tumors. Other treatment alternatives include patellectomy, curretage and grafting or methlymetacrylate cement filling or prosthesis following resection and arthroplasty.