Mr Frederik WILLEY United Kingdom Joined in 1956, left in 1958
Mr Frederik WILLEY United Kingdom Joined in 1956, left in 1958
Mr Alan WILLIAMS United Kingdom Joined in 1966, left in 1970
Ms Betty WILLIAMS United Kingdom Joined in 2005, left in 2010
Mr Llywelyn WILLIAMS United Kingdom Joined in 1952, left in 1954
Mr Ronald Watkins WILLIAMS United Kingdom Joined in 1951, left in 1952
Sir Thomas WILLIAMS United Kingdom Joined in 1980, left in 1981
Ms Jenny WILLOTT United Kingdom Joined in 2005, left in 2007
Mr Serge WILMES Luxembourg EPP/CD Joined in 2015, left in 2019
Mr David WILSHIRE United Kingdom EDG Joined in 1997, left in 2010
Lord David WILSON United Kingdom NR Joined in 2017, left in 2017
Mr Phil WILSON United Kingdom SOC Joined in 2015, left in 2020
Lord Ian WINTERBOTTOM United Kingdom Joined in 1965, left in 1966
Dame Rosie WINTERTON United Kingdom SOC Joined in 2017, left in 2017
Ms Angelika WINZIG Austria EPP/CD Joined in 2014, left in 2020
Mr Hans-Jürgen WISCHNEWSKI Germany Joined in 1973, left in 1974
Mr Claude WISELER Luxembourg EPP/CD Joined in 2019, left in 2021
Ms C.W.I. WITTEWAAL - VAN STOETWEGEN Netherlands Joined in 1964, left in 1964
Ms Renate WOHLWEND Liechtenstein EPP/CD Joined in 1994, left in 2013
Mr Michał WOJTCZAK Poland EPP/CD Joined in 1999, left in 2012
Mr Andrzej WOJTYŁA Poland EC/DA Joined in 2016, left in 2020
Ms Karin S. WOLDSETH Norway EDG Joined in 2005, left in 2013
Mr Christopher WOODHOUSE United Kingdom Joined in 1961, left in 1962
Mr Marcus WORSLEY United Kingdom Joined in 1965, left in 1970
Mr Bas van 't WOUT Netherlands ALDE Joined in 2015, left in 2016
Mr Anthony WRIGHT United Kingdom Joined in 1999, left in 2000
Lord Patrick WRIGHT United Kingdom NR Joined in 2016, left in 2017
Ms Mareike Lotte WULF Germany EPP/CD Joined in 2023, left in 2025
Mr Arben XHAFERI The former Yugoslav Republic of Macedonia Joined in 1999, left in 2002
Mr Ferdinand XHAFERI Albania EPP/CD Joined in 2022, left in 2025
Mr Alexei V. YABLOKOV Soviet Union Joined in 1989, left in 1992
Ms Nelli YAKIMENKI Soviet Union Joined in 1992, left in 1994
Mr Alexander M. YAKOVLEV Soviet Union Joined in 1989, left in 1991
Mr Alexander YANTCHOULEV Bulgaria Joined in 1990, left in 1992
Mr Victor YANUKOVYCH Ukraine SOC Joined in 2006, left in 2013
Ms Tatiana YARYGINA Russian Federation* Joined in 2002, left in 2004
Mr Victor Francis YATES United Kingdom Joined in 1964, left in 1966
Mr Volodymyr YAVORIVSKY Ukraine Joined in 1994, left in 1998