Alex Walker (born 31 July 1986, Newport) is a Welsh rugby union player. He is a Wales sevens international.
A scrum half, Walker played for Newport HSOB and Newport RFC before joining Newport Gwent Dragons. During the 2008–09 season he spent time on loan to London Welsh. He was released by Newport Gwent Dragons in August 2010 and joined Eastwood Rugby Club in Sydney, Australia. In July 2011 he joined the Scarlets.
He was selected in the Wales Sevens squad for 2012-13