Schardt is a surname of European origin. Notable persons with the surname include:
Arlie Schardt (1895–1980), American athlete Hans Schardt (1858–1931), Swiss geologist Johan Gregor van der Schardt (c. 1530/31–1581), sculptor Sophie von Schardt(1755–1819), Weimar poet Susan Schardt (1872–1934), Austrian philanthropist Wilburt Schardt (1886–1964), American baseball player