Dostaler is a Canadian surname. Notable people with the surname include:

• Edward Dostaler (born 1988), Canadian charity runner
• Omer Dostaler (1849–1925), Canadian politician
• Pierre-Eustache Dostaler (1809–1884), Canadian politician
• Theresa Dostaler, Canadian hockey activist

• Émile-Dostaler O'Leary (1908–1965), Canadian journalist and writer
• Dostler