Acute onset non-traumatic hip joint pain in children with fever is usually due to septic arthritis or transient synovitis. The association between dengue fever and isolated hip joint inflammation is not known. We present a case of a two-and-a-half year old girl with one week history of right hip pain, fever and inability to walk. She had painful range of hip motion and antalgic gait. Laboratory values were unremarkable, radiographs showed medial joint space widening and ultrasound revealed effusion. She was managed as transient synovitis of hip. During the course of stay, serology was positive for dengue fever. The child was treated symptomatically and recovered in ten days. In endemic zones, awareness of such presentation should be kept in mind to differentiate from benign condition like transient synovitis.