超线程（HT, Hyper-Threading）是英特尔研发的一种技术，于2002年发布。超线程技术原先只应用于Xeon处理器中，当时称为“Super-Threading”。之后陆续应用在Pentium 4中，将技术主流化。早期代号为Jackson。

通过此技术，英特尔实现在一个实体CPU中，提供两个逻辑线程。之后的Pentium D纵使不支持超线程技术，但就集成了两个实体核心，所以仍会见到两个线程。超线程的未来发展，是提升处理器的逻辑线程。英特尔于2014年发布的Core i7-5960X便是将8核心的处理器，加上超线程技术，使之成为16个逻辑线程的产品。

Hyper-threading (officially called Hyper-Threading Technology or HT Technology, and abbreviated as HTT or HT) is Intel's proprietary simultaneous multithreading (SMT) implementation used to improve parallelization of computations (doing multiple tasks at once) performed on x86 microprocessors. It first appeared in February 2002 on Xeon server processors and in November 2002 on Pentium 4 desktop CPUs. Later, Intel included this technology in Itanium, Atom, and Core 'i' Series CPUs, among others.