Cow Myers is a Site of Special Scientific Interest (SSSI) located in the Nidderdale Area of Outstanding Natural Beauty (AONB), near Ripon, North Yorkshire, England.

[2] This 17th century listed building is not within the SSSI boundary, but may have been historically associated with its land, being the nearest surviving dwelling to the north entrance.

"[8] Cow Myers was notified as an SSSI on 26 January 1984, for its variety of natural wetland habitats, and the diversity of plant species supported there.

[8] Over 100 plant species, including the abovementioned, were seen by the Harrogate and District Naturalists' Society in May 2019, including bog pimpernel, enchanter's nightshade, twayblade, ragged robin, yellow pimpernel, Pedicularis palustris or marsh lousewort, Valeriana dioica or marsh valerian, and early dog violet.

[13] Cow Myers is located in the Nidderdale Area of Outstanding Natural Beauty, and sometimes the organisation's volunteers are brought in to assist with maintenance.

It was judged that Area One, 2.9549 hectares (0.02955 km2; 0.01141 sq mi) of "broadleaved mixed and yew woodland (lowland)," was in favourable condition.

Area Three, 5.1578 hectares (0.05158 km2; 0.01991 sq mi) of "lowland broadleaved, mixed and yew woodland," was judged favourable, although encroachment of Himalayan balsam was noted.

[17] In 2014 it was noted by the Environment Agency that chemicals from slug pellets, possibly originating in agriculture further upstream, were contaminating the water at Cow Myers.

[18] In an undated document from North Yorkshire County Council's Minerals and Waste Plan, the effect on neighbouring SSSIs including Cow Myers was considered.

[19] Other SSSIs near Harrogate are as follows:[20] Bishop Monkton Ings,[21] Brimham Rocks,[22] Farnham Mires,[23] Hack Fall Wood,[24] Hay-a-Park,[25] Kirk Deighton[26] Mar Field Fen,[27] Quarry Moor,[28] and Ripon Parks.