SMMU

SMMU may refer to:


 * Second Military Medical University, China
 * System Memory Management Unit, an IOMMU by ARM
 * Smack My Marine Up, in the List of Doom source ports
 * PIMCO Short Term Muni Bond Strategy ETF (NYSE Arca code: SMMU); See List of American exchange-traded funds
 * SMMU, a force of the Austrian Armed Forces