UK Parliamentarians
- Baroness Nicholson of WinterbourneConservativeMember of the House of LordsPeer since 1997
- Baroness NoakesConservativeMember of the House of LordsPeer since 2000
- Caroline NokesConservativeMP for Romsey and Southampton NorthMP since 2010
- Jesse NormanConservativeMP for Hereford and South HerefordshireMP since 2010
- Alex NorrisLabourMP for Nottingham North and KimberleyMP since 2017
- Dan NorrisIndependentMP for North East Somerset and HanhamMP since 2024
- Baroness NorthoverLiberal DemocratMember of the House of LordsPeer since 2000
- Lord Norton of LouthConservativeMember of the House of LordsPeer since 1998
- The Lord Bishop of NorwichBishopsMember of the House of LordsPeer since 2023
- Baroness NyeLabourMember of the House of LordsPeer since 2010
- Neil O'BrienConservativeMP for Harborough, Oadby and WigstonMP since 2017
- Lord O'DonnellCrossbenchMember of the House of LordsPeer since 2012
- Baroness O'Grady of Upper HollowayLabourMember of the House of LordsPeer since 2022
- Brendan O'HaraScottish National PartyMP for Argyll, Bute and South LochaberMP since 2015
- Baroness O'LoanCrossbenchMember of the House of LordsPeer since 2009
- Baroness O'Neill of BengarveCrossbenchMember of the House of LordsPeer since 1999
- Baroness O'Neill of BexleyConservativeMember of the House of LordsPeer since 2022
- Lord O'Neill of GatleyCrossbenchMember of the House of LordsPeer since 2015
- Lord O'ShaughnessyConservativeMember of the House of LordsPeer since 2015
- Lord Oakeshott of Seagrove BayNon-affiliatedMember of the House of LordsPeer since 2000
- Lord OatesLiberal DemocratMember of the House of LordsPeer since 2015
- Ben Obese-JectyConservativeMP for HuntingdonMP since 2024
- Sarah OlneyLiberal DemocratMP for Richmond ParkMP since 2019
- Melanie OnnLabourMP for Great Grimsby and CleethorpesMP since 2024
- Dame Chi OnwurahLabourMP for Newcastle upon Tyne Central and WestMP since 2010
- Dr Simon OpherLabourMP for StroudMP since 2024
- Ms Abena Oppong-AsareLabourMP for Erith and ThamesmeadMP since 2019
- Baroness OsamorLabourMember of the House of LordsPeer since 2018
- Kate OsamorLabourMP for Edmonton and Winchmore HillMP since 2015
- Kate OsborneLabourMP for Jarrow and Gateshead EastMP since 2019
- Tristan OsborneLabourMP for Chatham and AylesfordMP since 2024
- Taiwo OwatemiLabourMP for Coventry North WestMP since 2019
Source: parliament.uk · 1,424 currently sitting · Open Government Licence v3.0