McLain is an unincorporated community in Harvey County, Kansas, United States.

It is located a few miles southeast of Newton at the intersection of SE 36th St and S Woodlawn Rd.

McLain had a post office from 1886 until 1906.

[2] The community was located along the Missouri Pacific Railroad line between Newton and Whitewater, but the track was abandoned in 2003.

[3] The community is served by Newton USD 373 public school district.