R99 may refer to:
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R99 (New York City Subway car)
The R29 was a New York City Subway car model built by the St. Louis Car Company in 1962 for the Interborough Rapid Transit Company, IRT A Division (New York City Subway), A Division. A total of 236 cars were built, arranged in married pairs.
The ...
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R99 (star)
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Embraer R-99, a Brazilian Air Force military aircraft
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* , a destroyer of the Royal Navy
{{disambiguation