Lembke (March 4, 1865 – July 18, 1923) was an American architect and contractor who was prominent in Valparaiso, Indiana.
Lembke built many downtown Valparaiso-area buildings, such as the Memorial Opera House (National Register, 1984), Carnegie public Library, Hotel Lembke, and several local schools.Lembke was born to German immigrants Christian Lembke and Caroline Nuppnau Lembke.
He completed his education in his hometown of Valparaiso, then went on to Valparaiso University, completing his education in the School of Architecture at the University of Chicago.
He returned to Valparaiso and formed the Charles Lembke company with his two brothers, William and Henry.
Because state law would not allow an architect to build the structure he designed, Charles managed the design business and Henry managed the construction business; they built much of what they designed.
Charles grandson stated in 1966 that the family felt that Charles best work as DeMotte Hall on the campus of Valparaiso University.
Constructed in 1915 as the Agriculture and Domestic Science Building, the building served the university after 1959 as the Valparaiso School of Law.