- Andorra: PLA
- Belgium: MR, VLD
- Bosnia and Herzegovina: LDS*
- Botswana: BMD*
- Bulgaria: DPS, NDSV
- Burkina Faso: ADF-RDA*
- Burma: NLD-LA*
- Burundi: ADR
- Cambodia: PSR
- Canada: Liberal Party
- Colombia: U*
- DR Congo: ANADER, ARC*, URC*
- Costa Rica: PML
- Côte d'Ivoire: RDR
- Croatia: HSLS
- Cuba: PLC, PSD, ULC
- Denmark: RV, Venstre
- Egypt: FEP, Ghad*
- Equatorial Guinea: UDENA
- Estonia: RE
- Ethiopia: EDP*
- Finland: Keskusta, SFP
- Georgia: RPG*
- Germany: FDP
- Gibraltar: Liberal Party
- Guatemala: MR*, PP
- Guinea: UFDG*, UFR*
- Honduras: PLH
- Hungary: MLP
- Iceland: FSF
- Indonesia: PD*
- Ireland: FF*
- Israel: Shinui
- Italy: Rad, FdL*
- Kenya: LDP*
- Kosovo: PLK*
- Latvia: LPP/LC
- Lebanon: Future Movement*
- Lithuania: LCU
- Luxembourg: DP
- Madagascar: MFM*
- Malawi: UDF
- Malaysia: Gerakan*, PKR*
- Mali: PCR*
- Mexico: NA*
- Moldova: PRL*
- Mongolia: IZN
- Montenegro: LSCG
- Morocco: AdL*, UC, MP
- Mozambique: PPDD*
- Netherlands: D66 , VVD
- Nicaragua: PLI*
- North Macedonia: LDP
- Norway: Venstre
- Paraguay: PLRA
- Philippines: LP
- Romania: PNL
- Russia: Yabloko
- Senegal: PDS
- Serbia: LDP
- Seychelles: SNP*
- Slovakia: ANO
- Slovenia: LDS
- South Africa: DA
- Spain: CDC
- Sri Lanka: LP
- Sweden: C, L
- Switzerland: FDP.The Liberals
- Taiwan: DPP
- Tanzania: CCW/CUF
- Thailand: DP
- Ukraine: UM*
- United Kingdom: APNI, Lib Dems
- Zambia: UNDP*
National groups:
* observer
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