Founders include past or present members with substantial positive contributions critical to the Euclid mission during the selection period (2007 to mid-2011). The list of Euclid Founders is decided by the Euclid Consortium Board.

Examples of relevant contributions were:

• A significant role in the initial Proposal (Sep 2007), phase A proposal (mid-2008); Yellow Book (Q4, 2009), phase A-1 down-selection (end 2009), IPRR review (mid-2011), Red Book (Q2 2011), Selection (Q3 2011);
• A significant role in securing of national funding prior to mid-2011;
• A significant role in proving critical project management and engineering inputs;
• A significant scientific leadership which was essential to get the mission selected.

All EC Founders have the right to sign all papers published by the Euclid Consortium while they are active members of the consortium. This also includes the publications of the Euclid Collaboration (EC, ESA, Industry) as well as joint co-publications EC-international collaboration.

Surname	Name	Country of current affiliation (Apr 2020)
Aghanim	Nabila	FR
Amara	Adam	UK
Amendola	Luca	DE
Amiaux	Jerome	FR
Auguere	Jean-Louis	FR
Bender	Ralf	DE
Brinchmann	Jarle	PT
Capak	Peter	US
Castander	Francisco	ES
Cimatti	Andrea	IT
Cledassou	Rodolphe	FR
Cole	Richard	UK
Cropper	Mark	UK
Di Giorgio	Anna Maria	IT
Ealet	Anne	FR
Garilli	Bianca	IT
Grupp	Frank	DE
Guzzo	Luigi	IT
Hoekstra	Henk	NL
Holmes	Rory	INDUSTRY
Jahnke	Knud	DE
Kitching	Thomas	UK
Kuijken	Konrad	NL
Kunz	Martin	CH
Lahav	Ofer	UK
Le Fevre	Olivier	FR
Lilje	Per	NO
Maciaszek	Thierry	FR
Massey	Richard	UK
Mellier	Yannick	FR
Meneghetti	Massimo	IT
Meylan	Georges	CH
Miller	Lance	UK
Moscardini	Lauro	IT
Nichol	Robert	UK
Paltani	Stephane	CH
Pasian	Fabio	IT
Peacock	John	UK
Percival	Will	CA
Prieto	Eric	FR
Rebolo	Rafael	ES
Refregier	Alexandre	CH
Rhodes	Jason	US
Rix	Hans-Walter	DE
Rottgering	Huub	NL
Saglia	Roberto	DE
Scaramella	Roberto	IT
Schneider	Peter	DE
Schweitzer	Mario	INDUSTRY
Scodeggio	Marco	IT
Taylor	Andy	UK
Valentijn	Edwin	NL
Valenziano	Luca	IT
Wang	Yun	US
Weller	Jochen	DE
Zamorani	Giovanni	IT
Zerbi	Filippo Maria	IT