Lyndsey \l(y)-nd-sey, lyn-dsey\ as a boy's name (also used as girl's name Lyndsey), is a variant of Lindsay (Old English), and the meaning of Lyndsey is "Lincoln's marsh; island of linden trees".

The baby name Lyndsey sounds like Lyndsay and Lindsey. Other similar baby names are Lynden, Lindley, Lyndsie, Linsey, Lindsy and Lindsee.