Vortex (ISP)
{{More citations needed|date=December 2024}}{{Infobox company
| name = Hringiðan ehf
| logo = Hringidan-logo-dokkt.png
| logo_size = 150px
| type = Private
| industry = Information technology
| foundation = Reykjavik, Iceland ({{Start date|1995|03}})
| location_city = Reykjavik
| location_country = Iceland
| area_served = Iceland
| services = Internet service provider
| homepage = {{URL|hringidan.is}}
}}
Hringiðan ehf (Vortex Inc.) is an Internet service provider operating in Iceland. They offer ADSL, VDSL and fiber Internet connections for individuals and companies, website hosting and landline phone services.
Hringiðan was founded in March 1995, which makes the company one of the oldest ISP's in Iceland.[http://pfs.is/default.aspx?cat_id=10&module_id=210&element_id=3496 PFS - Skráð fyrirtæki], Retrieved 26. February 2013.
Hringiðan was one of three companies to first launch fiber in co-operation with Gagnaveita Reykjavíkur for individuals in 2005.[http://www.mbl.is/greinasafn/grein/1044262/?item_num=56&dags=2005-10-18 Þrír bjóða netið í gegnum ljósleiðara], Retrieved 26. February 2013