Young European Socialists (YES), formerly the European Community Organisation of Socialist Youth (ECOSY), is an association of social democratic youth organisations in Europe and the European Union.
YES is the youth organisation of the Party of European Socialists (PES) and is a sister organization of the International Union of Socialist Youth (IUSY). The seat of the organisation is Brussels.
Full members status is held to the European Youth Forum (YFJ) which operates within the Council of Europe and European Union areas and works closely with both these bodies.
YES was founded as the European Community Organisation of Socialist Youth (ECOSY) in November 1992 in Oegstgeest/The Hague. The preparatory committee consisted of Philip Cordery (MJS, France), Joris Jurriëns (JS-PvdA, Netherlands), Jens Geier (Jusos, Germany), Giustina Magistretti (Italy) and Pascal Smet (Belgium).
Before 1992 the European activities had been coordinated inside IUSY, especially in the European Leaders Meeting. The foundation of ECOSY had been controversial. In particular, the Austrians and the Swedish promoted an all-European organisation, including the non-EU members.
The European Socialist Youth (ESY), founded in parallel, was only a weak organisation, a short time later renamed as European Committee, one of the IUSY continental committees.
The organisation's name was changed to Young European Socialists (YES) at the 11th Congress in Bommersvik in 2013.
Beside these 50 full member organisations there are 14 observer members
Since the founding of ECOSY in 1992 until 1997, the presidency rotated simultaneously with the EU Presidency
- 1992 Tracy Paul (Young Labour)
- 1993 Henrik Sass Larsen (Danmarks Socialdemokratiske Ungdom)
- 1993 Ronald Gossiaux (Mouvement des Jeunes Socialistes / Belgium)
- 1994 Vasilis Togias (Neolaia Pasok)
- 1994 Reinhold Rünker (Jusos in der SPD)
- 1995 Renaud Lagrave (Mouvement des Jeunes Socialistes)
- 1995 Martin Guillermo (Juventudes Socialistas de España)
- 1995 Paco-Luis Benitez (Juventudes Socialistas de España)
- 1996 Vinicio Peluffo (Sinistra Giovanile)
- 1996 Mick McLoughlin (Labour Youth)
- 1997 Thomas Windmulder (Jonge Socialisten in de PvdA)
Afterwards, ECOSY has an elected president
- 1997–1999 Andreas Schieder (Sozialistische Jugend Österreich)
- 1999–2001 Hugues Nancy (Mouvement des Jeunes Socialistes)
- 2001–2003 Jan Krims (Verband Sozialistischer StudentInnen Österreichs)
- 2003–2005 Anders Lindberg (Sveriges Socialdemokratiska Ungdomsförbund)
- 2005–2009 Giacomo Filibeck (Sinistra Giovanile)
- 2009–2011 Petroula Nteledimou (Neolaia PASOK)
- 2011–2015 Kaisa Penny (Demarinuoret & SONK)
- 2015–2017 Laura Slimani (Mouvement des Jeunes Socialistes)
- 2017–2019 Joao Albuquerque (Juventude Socialista)
- Since 2019 Alicia Homs (Juventudes Socialistas de España)
- 1992–1997 Philip Cordery (Mouvement des Jeunes Socialistes / France)
- 1997–1999 Pau Solanilla (Juventudes Socialistas de España)
- 1999–2003 Yonnec Polet (Mouvement des Jeunes Socialistes / Belgium)
- 2003–2005 Ilias Antoniou (Neolaia Pasok)
- 2005–2009 Ania Skrzypek (Federacja Młodych Socjaldemokratów)
- 2009–2011 Janna Besamusca (Jonge Socialisten in de PvdA)
- 2011–2015 Thomas Maes (Jongsocialisten; ex Animo)
- 2015–2017 Nina Živanović (SDY in SDU)
- 2017–2019 Tuulia Pitkänen (Sosialidemokraattiset Nuoret / Finland)
- 2019–2020 Maj Christensen Jensen (Danmarks Socialdemokratiske Ungdom)
- Since 2020 Ana Pirtskhalava (Young Socialists Georgia)