Lynam or Lynham is a surname of Irish origin. It is an anglicisation of the Old Irish name Ó Laigheanáin, which means "someone from Laighean" in Leinster. Related names include Leaneagh, Laighneach, and Lynagh. Lynam may refer to:
Anthony Lynham (born 1960), Australian politician
Des Lynam (born 1942), British television and radio presenter
Ian Lynam (born 1970), Irish hurler and coach
James Lynam Molloy (1837–1909), Irish composer
Jim Lynam (born 1941), American basketball coach and analyst
Joe Lynam (born 1970), Irish journalist
Joss Lynam (1924–2011), Irish mountaineer
Robert Lynam (writer) (1796–1845), British writer
Severus William Lynam Stretton (1783–1884), British soldier