Aquantia Corporation is a manufacturer of high-speed transceivers. In 2004, Aquantia was founded to revolutionize Ethernet and accelerate connectivity. Aquantia first delivered products for Data Center connectivity, and in 2012 developed the world's first integrated 10GBASE-T MAC/PHY for servers. In 2014, Aquantia introduced a new Multi-Gig Ethernet technology into the Enterprise Infrastructure market and was joined by Cisco and others in co-founding the NBASE-T Alliance. Their Multi-Gig technology served as the baseline for the 802.3bz standard that was ratified by the IEEE in September 2016. This standard is now the basis for all new Multi-Gig implementations on Cat 5e and Cat 6 cabling in the Enterprise, SMB and SoHo environments.

In 2016 Aquantia introduced the first 100G technology, QuantumStream. In 2017, the company introduced a class of Multi-Gig products combining their Multi-Gig PHY technologies with an Enterprise-class controller to address the next generation of Client Connectivity in PCs by collaborating with numerous PC OEMs.

Every year, more than a billion ports of Ethernet ship into a variety of platforms. These platforms have started to convert from outdated Gigabit Ethernet to Multi-Gigabit Ethernet as the demand for bandwidth and data continues to grow. The Company currently addresses the Multi-Gig upgrade cycles across their existing (Data Center, Enterprise Infrastructure and Access applications) and new markets.

It is a privately held company which had raised $178.9 million over eight rounds of funding as of mid-2015. It won Company of the Year at the 2014 annual Creativity in Electronics awards, and was ranked by Deloitte Fast 500 as the fastest-growing semiconductor company in North America in 2014, 2015, and 2016. In 2016, Aquantia was named a finalist in UBM Tech’s EE Times and EDN Annual Creativity in Electronics (ACE) Awards for “Company of the Year".

Aquantia acquired the 10GBASE-T assets of PLX Technology in September 2012. PLX had picked them up in September 2010 from Teranetics.