In 1963, Abdollah Riazi became a candidate for the 21st Parliament and was elected as the top deputy from capital.He was then elected as member of the executive committee and Speaker of the Majles (Parliament or Congress) for the first time.He remained Speaker of the Parliament in the 22nd and 23rd term, for three consecutive full four year terms or 12 years. In the 24th term he served as Speaker in the beginning of the term, but was succeeded by Javad Saeed.