B61 may refer to:
*
B61 nuclear bomb
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B61 (New York City bus) in Brooklyn
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HLA-B61, an HLA serotype
*
Sicilian, Richter-Rauzer, Encyclopaedia of Chess Openings code
* Alternative name for the
ephrin A1, human gene
B-61 may refer to:
*
B-61 Matador
The Martin MGM-1 Matador was the first operational surface-to-surface cruise missile designed and built by the United States. It was developed after World War II, drawing upon their wartime experience with creating the Republic-Ford JB-2, a ...
, the first operational surface-to-surface cruise missile built by the United States
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