SRN1 may refer to:
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SR-N1
The Saunders-Roe SR.N1 (Saunders-Roe Nautical 1) was the first practical hovercraft. The concept has its origins in the work of British engineer and inventor Christopher Cockerell, who succeeded in convincing figures within the services and in ...
, the first practical hovercraft
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SR N1 class
The SECR N1 class was a type of 3-cylinder 2-6-0 ('mogul') steam locomotive designed by Richard Maunsell for mixed traffic duties, initially on the South Eastern and Chatham Railway (SECR), and later operated for the Southern Railway (SR). The ...
, a class of locomotives
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Radical-nucleophilic aromatic substitution (S
RN1), a type of substitution reaction in organic chemistry
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