Luke Mwananshiku (1938 – March 2, 2003) was a Zambian banker, businessman, politician and diplomat. He was a government minister under Zambia's first president, Kenneth Kaunda, serving as the governor of the Bank of Zambia from 1976 to 1981 and as foreign minister of Zambia from 1986 to 1990. Mwananshiku was also the finance minister of Zambia for a time. He served as a director of the Zambia Consolidated Copper Mines and of the International Monetary Fund. He died at the Trust Hospital in Lusaka of heart failure.