R-class submarine may refer to:
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British R-class submarine
The R-class submarines were a class of 12 small British diesel-electric submarines built for the Royal Navy during World War I, and were forerunners of the modern attack submarine, in that they were designed specifically to attack and sink enemy ...
, a class of 12 small British diesel-electric submarines built for the Royal Navy during World War I
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Italian R-class submarine
The R-class or ''Romolo''-class submarine was a group of submarines built for the Royal Italian Navy (''Regia Marina Italiana'') during World War II. They were designed as blockade running transport submarines for transporting high-value cargo ...
, a group of submarines built for the Italian Royal Navy (Regia Marina Italiana) during World War II
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''Rainbow''-class submarine, a Royal Navy World War II submarine
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United States R-class submarine
The R-class submarines were a class of United States Navy submarines active from 1918 until 1945. With the first of the class laid down following the American entry into World War I, they were built rapidly. Although ''R-15'' through ''R-20'' we ...
, a class of United States Navy submarines active from 1918 until 1945
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