Charles F. Lembke (March 4, 1865 – July 18, 1923) was an American architect and contractor who was prominent in Valparaiso, Indiana.
He returned to Valparaiso and formed the Charles Lembke company with his two brothers, William and Henry.
At the Paris Exposition of 1900, the French Society of Architects awarded Charles Lembke First Place and the Gold medal for the best two-room school house made of brick.
Charles Lembke contributed a significant number of structures to Valparaiso and Porter County.
[5] Charles Lambke was awarded three patents on internal combustion engines.