Si Phraya Road (Thai: ถนนสี่พระยา, pronounced [sìː pʰráʔ.jāː]) is a road in Bang Rak District, Bangkok, Thailand. It divides the areas of Maha Phruettharam and Si Phraya subdistricts. Built in 1906 by four noblemen of the rank phraya (hence the name, which means 'four phraya'), the road runs from Si Phraya Pier at the mouth of the Phadung Krung Kasem Canal to Sam Yan Intersection, where it meets the Phaya Thai and Rama IV Roads.