Iceland energy authority — electricity generation, use, fuel sales, power plants and licences. Use for energy-system analysis.
Fiskistofa — public WFS layers for fishing closures, regulations and fishing areas; paid REST catch/quota data is excluded.
Hafrannsóknastofnun / MFRI — annual fish-stock assessments, advice, landings and survey series in embedded tables.
Environment Agency of Iceland GIS — open WFS layers for contaminated land, water, protected areas, noise and wastewater.
Icelandic Met Office (Veðurstofa) — weather observations, stations, forecasts and earthquakes via the modern JSON API at api.vedur.is.
Iceland Tax Authority — annual reports (ársreikningar), company registry, ownership chain mapping by kennitala.
Icelandic state accounts actuals (ríkisreikningur, Fjársýsla) — yearly revenue and expense 2015+, 36 málefnasvið policy areas.
Central Bank of Iceland — SDMX API for balance sheets and new credit, plus daily key interest rates 2007+ via gagnabanki.is.