Background: Postdural puncture headache (PDPH) is defined as a headache occurring within 5 days after lumbar puncture (LP). The present study assessed post dural puncture headache using various sizes of spinal needles. Materials & Methods: 90 patients who were planned to undergo lower limb or lower abdomen surgery under spinal anesthesia of American Society of Anesthesiologists Physical Status I and II were divided into three groups, Group I, II, and III having a lumbar puncture was made in the L3-L4 interspace using Quinckes spinal needle of size 23 gauge, 25 gauge, and 26 gauge, respectively. Patients complaining of the headache and satisfying the criteria for PDPH as laid out by International Society of Headache were diagnosed to have PDPH. The severity of the headache was assessed using Cocker’s scale.