Napier and Miller (also Messers Napier and Miller) are Scottish shipbuilders at Old Kilpatrick, Glasgow, Scotland.
The company built two large, double-ended steam passenger ferries for the Port Jackson and Manly Steamship Company Limited in Sydney, Australia, launched in 1927 and 1928. They were named "Dee Why" and "Curl Curl" and were in service until 1968 and 1960 respectively. Their triple-expansion, four-cylinder reciprocating engines were built by W F Henderson.