The surname Laidler is a surname. Notable people with the surname include:
David Laidler (born 1938), English/Canadian economist and scholar of monetarism Graham Laidler (1908–1940), British cartoonist Harry W. Laidler (1884–1970), American Socialist writer and politician Jeremy Laidler (born 1989), Australian rules football player Jim Laidler, American autism activist and skeptic Keith J. Laidler (1916–2003), English pioneer in chemical kinetics