Corylus avellana L.

 Aragonese: abellanera; abillanera; aurán; avellanera; avellanero; avellano; bellanera sources: Anthos (2010). Information System of the plants of Spain. Real Jardín Botánico, CSIC - Fundación Biodiversidad. (for names from the Iberian Peninsula and the Balearic Islands).

 Asturian: abeyar; abiyanal; abiyaneira; abiyaneiro; ablana; ablanal; ablanar; ablanar montés; ablaneiro; ablanero; ablano; ablanu; ablanu montés; ablanu montesín; ablanu vilandiegu; ablanu villandiegu; ablanu villandigu; ablenu; abrana; abrao; abrau; avellana; avellano; avellanu; avellau; avillao; aviyaa; belortu; braneiru; carapiella; carapiellu; carrulla; caspellar; castellar; castillu; catellar; gromu; matu; panciella; parra; parru; picón; piñu; prendengues sources: Anthos (2010). Information System of the plants of Spain. Real Jardín Botánico, CSIC - Fundación Biodiversidad. (for names from the Iberian Peninsula and the Balearic Islands).

 Catalan: ablana; auran; aurán; avellana capelurda; avellana común; avellana de muela; avellana gordal; avellana grifolla tardía; avellana grifolla temprana; avellana grijola tardía; avellana grijola temprana; avellana grossal; avellana llargueta; avellana negreta; avellana piñolenca; avellana rudoñil; avellaner; avellaner bord; avellanera; avellanes; vellaner; vellanera sources: Anthos (2010). Information System of the plants of Spain. Real Jardín Botánico, CSIC - Fundación Biodiversidad. (for names from the Iberian Peninsula and the Balearic Islands).

 Dutch: Hazelaar sources: Dutch Species Register

 English: Coll Hazel; Hazel sources: Nash, Roisin (FaEu - Ecological Consultancy Services Ltd (Ecoserve))

 English-United States: Coll Hazel; Hazel sources: Charles Hussey

 Euskera: abellano; basa; basaura; basa-urra; besaurr; hurritz; hurritza; hurrondo; urnitx; ur-ondo; urr; urra; urrá; urraitz; urratze; urreitz; urri; urritz; urritza; urrizá; urrkaraun; urrondo; urrutx sources: Anthos (2010). Information System of the plants of Spain. Real Jardín Botánico, CSIC - Fundación Biodiversidad. (for names from the Iberian Peninsula and the Balearic Islands).

 Galician: abalaira; abeladoira; abelaira; abelairo; abelán; abelaneira; abelaneiro; abelanoira; abelao; abeleira; abeleiro; ablaira; abraira; avaleiro; avelaira; avelairo; avelán; avelaneira; avelaneiro; avelans; aveleira; aveleiro; avellaneiro; Coll sources: Anthos (2010). Information System of the plants of Spain. Real Jardín Botánico, CSIC - Fundación Biodiversidad. (for names from the Iberian Peninsula and the Balearic Islands).

 Georgian: ჩვეულებრივი თხილი sources: Georgia PESI focal point

 High Aragonese: abellanera; abellanero; abillanera; avellano; bellanera sources: Anthos (2010). Information System of the plants of Spain. Real Jardín Botánico, CSIC - Fundación Biodiversidad. (for names from the Iberian Peninsula and the Balearic Islands).

 Irish: Coll sources: Nash, Roisin (FaEu - Ecological Consultancy Services Ltd (Ecoserve))

 Majorcan: avellaner; vallaner; vellaner sources: Anthos (2010). Information System of the plants of Spain. Real Jardín Botánico, CSIC - Fundación Biodiversidad. (for names from the Iberian Peninsula and the Balearic Islands).

 Norwegian Bokmål: hassel

 Norwegian Nynorsk: hassel

 Portuguese: avelâ; avelaneira; avelaneiro; aveleira; aveleiras-bravas; aveleiro; avellaâ; avellaneira; avelleira sources: Anthos (2010). Information System of the plants of Spain. Real Jardín Botánico, CSIC - Fundación Biodiversidad. (for names from the Iberian Peninsula and the Balearic Islands).

 Spanish, Castillian: ablana; ablanal; ablanar; ablano; ablanu; alvellano; aurán; avellana; avellana cordobesa; avellana hembra; avellana macho; avellanal; avellanas vanas; avellanera; avellanero; avellano; avellano blanco; avellano bobo; avellano común; avellano cultivado; avellano europeo; avellano loco; avellano silvestre; avillano; avillanu; caballo; carrillete; cascaruto; cuculo; gambote; matu; nochizo; troncho sources: Anthos (2010). Information System of the plants of Spain. Real Jardín Botánico, CSIC - Fundación Biodiversidad. (for names from the Iberian Peninsula and the Balearic Islands).

 Swedish: hassel

 Turkish: Findik

 Valencian: ablana; avellana capelurda; avellana común; avellana de muela; avellana gordal; avellana grifolla tardía; avellana grifolla temprana; avellana grijola tardía; avellana grijola temprana; avellana grossal; avellana llargueta; avellana negreta; avellana piñolenca; avellana rudoñil; avellaner; avellanera; vellanera sources: Anthos (2010). Information System of the plants of Spain. Real Jardín Botánico, CSIC - Fundación Biodiversidad. (for names from the Iberian Peninsula and the Balearic Islands).

 Welsh: collen