Luuk van der Baaren Renunciation requirement for acquisition of citizenship Czech Republic Denmark No renunciation required for any mode of acquisition of citizenship No renunciation required for any mode of acquisition of citizenship Estonia A05 Birth in country (acquisition after birth) n.a. A06 Ordinary naturalisation Renunciation (note: exception A24 + exception for citizens by birth) A07 Socialisation-based acquisition n.a. A08 Spousal transfer n.a. A09 Filial transfer No renunciation A10 Adoption Renunciation A11 Transfer to other relatives n.a. A12 Transfer from former citizen n.a. A13 Spousal extension n.a. A14 Filial extension Renunciation A15 Extension to other relatives n.a. A16 Reacquisition Renunciation A17 Restricted citizenship rights n.a. A18 Citizenship of a specific country n.a. A19 Cultural affinity n.a. A20 Presumed citizens No renunciation A21 Very long residence n.a. A22 Refugees n.a. A23 stateless or unclear citizenship France No renunciation required for any mode of acquisition of citizenship No renunciation required for any mode of acquisition of citizenship n.a. A24 Special achievements No renunciation A25 Public service n.a. A26 Financial assets n.a. A27 Other reasons n.a. Renunciation requirement for No loss of citizenship No loss of citizenship acquisition of citizenship upon ret/acq foreign upon ret/acq foreign citizenship citizenship No loss of citizenship No loss of citizenship upon ret/acq foreign upon ret/acq foreign citizenship citizenship L05 Acquisition of foreign citizenship Loss - if citizen other than by birth L06 Non-renunciation foreign citizenship (acquisition by birth) n.a. RSCAS/GLOBALCIT-Comp. 2020/4 - © 2020 Authors Finland 21