Members of the Constituent Assembly of Lithuania were elected in the Lithuanian parliamentary election in April 1920. The assembly had 112 seats. Resigned members were replaced by lower-ranked candidates from the same electoral list and electoral district.
| Name | Age | Occupation | Parliamentary fraction | Resigned on | Electoral district | Electoral list | |
| 1 | 36 | Cooperative activist | Christian Democrats | IV (Telšiai) | Christian Democrats | ||
| 2 | 27 | Farmer | III (Raseiniai) | Christian Democrats | |||
| 3 | 53 | Farmer | II (Kaunas) | Christian Democrats | |||
| 4 | 34 | Soldier, farmer | Christian Democrats | V (Panevėžys) | Christian Democrats | ||
| 5 | 26 | Teacher | Christian Democrats | III (Raseiniai) | Christian Democrats | ||
| 6 | 33 | Organist | I (Marijampolė) | Christian Democrats | |||
| 7 | 46 | Worker | Christian Democrats | II (Kaunas) | Labor Federation | ||
| 8 | 27 | Writer | III (Raseiniai) | Christian Democrats | |||
| 9 | 36 | Bookkeeper | V (Panevėžys) | Social Democrats | |||
| 10 | 26 | Official | Popular Socialist and Peasant | III (Raseiniai) | Popular Socialist Democrats | ||
| 11 | 27 | Activist | Christian Democrats | V (Panevėžys) | Christian Democrats | ||
| 12 | 26 | Student | Christian Democrats | VI (Utena) | Christian Democrats | ||
| 13 | 39 | Worker | Christian Democrats | II (Kaunas) | Labor Federation | ||
| 14 | 31 | Physician | Popular Socialist and Peasant | VI (Utena) | Popular Socialist Democrats | ||
| 15 | 39 | Judge | III (Raseiniai) | Social Democrats | |||
| 16 | 28 | Minister | Christian Democrats | IV (Telšiai) | Christian Democrats | ||
| 17 | 49 | Lecturer | II (Kaunas) | Social Democrats | |||
| 18 | 42 | Worker | V (Panevėžys) | Social Democrats | |||
| 19 | 48 | Worker | Christian Democrats | V (Panevėžys) | Labor Federation | ||
| 20 | 32 | Official | III (Raseiniai) | Social Democrats | |||
| 21 | 42 | Priest | Christian Democrats | III (Raseiniai) | Christian Democrats | ||
| 22 | 32 | Minister | Christian Democrats | I (Marijampolė) | |||
| 23 | 28 | Teacher | Christian Democrats | II (Kaunas) | Christian Democrats | ||
| 24 | 56 | Attorney | Jewish | III (Raseiniai) | Democratic Jewish Union | ||
| 25 | 56 | Attorney | Jewish | V (Panevėžys) | Democratic Jewish Union | ||
| 26 | 49 | General | Christian Democrats | VI (Utena) | Christian Democrats | ||
| 27 | 32 | Craftsman | Popular Socialist and Peasant | II (Kaunas) | |||
| 28 | 33 | Worker | Christian Democrats | I (Marijampolė) | Christian Democrats | ||
| 29 | 43 | Attorney | Polish | III (Raseiniai) | Central Polish Electoral Committee | ||
| 30 | 24 | Farmer | Popular Socialist and Peasant | IV (Telšiai) | |||
| 31 | 53 | Physician | Popular Socialist and Peasant | I (Marijampolė) | Peasant Union | ||
| 32 | 24 | Farmer | Christian Democrats | VI (Utena) | Christian Democrats | ||
| 33 | 25 | Official | Christian Democrats | V (Panevėžys) | Labor Federation | ||
| 34 | 38 | Physician | Christian Democrats | V (Panevėžys) | Christian Democrats | ||
| 35 | 34 | Priest | Christian Democrats | III (Raseiniai) | Christian Democrats | ||
| 36 | 40 | Engineer | VI (Utena) | Social Democrats | |||
| 37 | 51 | Farmer | Christian Democrats | I (Marijampolė) | Christian Democrats | ||
| 38 | 30 | Sociologist | Christian Democrats | II (Kaunas) | Farmers' Association | ||
| 39 | 38 | Official | German | II (Kaunas) | Lithuanian German Committee | ||
| 40 | 32 | Agronomist | Popular Socialist and Peasant | I (Marijampolė) | Peasant Union | ||
| 41 | 39 | Farmer | Christian Democrats | II (Kaunas) | Farmers' Association | ||
| 42 | 36 | Priest | Christian Democrats | IV (Telšiai) | Christian Democrats | ||
| 43 | 30 | Teacher | Popular Socialist and Peasant | IV (Telšiai) | Peasant Union | ||
| 44 | 26 | Farmer | Popular Socialist and Peasant | IV (Telšiai) | |||
| 45 | 28 | Physician | Popular Socialist and Peasant | VI (Utena) | Peasant Union | ||
| 46 | 43 | Official | IV (Telšiai) | Socialist Company of Workers and Farmers | |||
| 47 | 48 | Priest | Polish | II (Kaunas) | Central Polish Electoral Committee | ||
| 48 | 28 | Official | Popular Socialist and Peasant | III (Raseiniai) | Peasant Union | ||
| 49 | 34 | Pharmacist | Popular Socialist and Peasant | III (Raseiniai) | Popular Socialist Democrats | ||
| 50 | 40 | Agronomist | Popular Socialist and Peasant | V (Panevėžys) | Peasant Union | ||
| 51 | 24 | Soldier | Christian Democrats | V (Panevėžys) | Labor Federation | ||
| 52 | 45 | Farmer | Popular Socialist and Peasant | I (Marijampolė) | Peasant Union | ||
| 53 | 33 | Official | Popular Socialist and Peasant | VI (Utena) | Peasant Union | ||
| 54 | Vincentas Mieleška (Milaška) | 27 | Priest | Christian Democrats | V (Panevėžys) | Christian Democrats | |
| 55 | 27–28 | Veterinarian | Christian Democrats | VI (Utena) | Christian Democrats | ||
| 56 | 28 | Jurist | Christian Democrats | V (Panevėžys) | Labor Federation | ||
| 57 | 24 | Teacher | Christian Democrats | I (Marijampolė) | Christian Democrats | ||
| 58 | 27 | Soldier | Popular Socialist and Peasant | I (Marijampolė) | Popular Socialist Democrats | ||
| 59 | 28 | Official | II (Kaunas) | Social Democrats | |||
| 60 | 59 | Writer | Popular Socialist and Peasant | V (Panevėžys) | Popular Socialist Democrats | ||
| 61 | 30 | Official | Popular Socialist and Peasant | III (Raseiniai) | |||
| 62 | 32 | Teacher | II (Kaunas) | Social Democrats | |||
| 63 | 50 | Rabbi | Jewish | I (Marijampolė) | Democratic Jewish Union | ||
| 64 | 39 | Jurist | V (Panevėžys) | Social Democrats | |||
| 65 | 37 | Teacher | VI (Utena) | Social Democrats | |||
| 66 | 37 | Priest | Christian Democrats | VI (Utena) | Christian Democrats | ||
| 67 | 48 | Physician | Jewish | IV (Telšiai) | |||
| 68 | 39 | Engineer | Popular Socialist and Peasant | III (Raseiniai) | Peasant Union | ||
| 69 | 26 | Activist | Christian Democrats | II (Kaunas) | Labor Federation | ||
| 70 | 34 | Official | Popular Socialist and Peasant | IV (Telšiai) | Peasant Union | ||
| 71 | 33 | Cooperative activist | Christian Democrats | IV (Telšiai) | Christian Democrats | ||
| 72 | 34 | Editor | Popular Socialist and Peasant | II (Kaunas) | Peasant Union | ||
| 73 | 61 | Attorney | Jewish | II (Kaunas) | Democratic Jewish Union | ||
| 74 | 35 | Farmer | Christian Democrats | V (Panevėžys) | Labor Federation | ||
| 75 | 36 | Soldier | Popular Socialist and Peasant | V (Panevėžys) | Peasant Union | ||
| 76 | ? | Farmer | Popular Socialist and Peasant | IV (Telšiai) | Peasant Union | ||
| 77 | 33 | Farm worker | Christian Democrats | V (Panevėžys) | Labor Federation | ||
| 78 | 42 | Engineer | V (Panevėžys) | Social Democrats | |||
| 79 | 43 | Attorney | Popular Socialist and Peasant | I (Marijampolė) | Popular Socialist Democrats | ||
| 80 | 36 | Physician | Jewish | VI (Utena) | Democratic Jewish Union | ||
| 81 | 32 | Teacher | Christian Democrats | V (Panevėžys) | Christian Democrats | ||
| 82 | 24 | Teacher | Christian Democrats | V (Panevėžys) | |||
| 83 | 28 | Teacher | Christian Democrats | III (Raseiniai) | Christian Democrats | ||
| 84 | 27 | Activist | Christian Democrats | VI (Utena) | Christian Democrats | ||
| 85 | 44 | Official | Christian Democrats | I (Marijampolė) | Christian Democrats | ||
| 86 | 51 | Physician | Popular Socialist and Peasant | VI (Utena) | Peasant Union | ||
| 87 | 53 | Priest | Christian Democrats | I (Marijampolė) | Christian Democrats | ||
| 88 | 35 | Agronomist | Christian Democrats | I (Marijampolė) | Christian Democrats | ||
| 89 | 35 | Worker | Christian Democrats | I (Marijampolė) | Christian Democrats | ||
| 90 | 48 | Priest | Christian Democrats | II (Kaunas) | Christian Democrats | ||
| 91 | 32 | Farmer | Christian Democrats | III (Raseiniai) | Christian Democrats | ||
| 92 | 26 | Smith | V (Panevėžys) | Social Democrats | |||
| 93 | 34 | Farmer | Christian Democrats | IV (Telšiai) | Christian Democrats | ||
| 94 | 34 | Priest | Christian Democrats | I (Marijampolė) | Christian Democrats | ||
| 95 | 27 | Soldier | Christian Democrats | I (Marijampolė) | Christian Democrats | ||
| 96 | 34 | Worker | Polish | II (Kaunas) | Central Polish Electoral Committee | ||
| 97 | 27 | Teacher | Popular Socialist and Peasant | VI (Utena) | Peasant Union | ||
| 98 | 31 | Teacher | Christian Democrats | I (Marijampolė) | Christian Democrats | ||
| 99 | 40 | Jurist | Christian Democrats | VI (Utena) | Christian Democrats | ||
| 100 | 30 | Jurist | Popular Socialist and Peasant | IV (Telšiai) | Popular Socialist Democrats | ||
| 101 | 34 | Banker | Christian Democrats | II (Kaunas) | Farmers' Association | ||
| 102 | 41 | Priest | Christian Democrats | I (Marijampolė) | Christian Democrats | ||
| 103 | 31 | Physician | Christian Democrats | V (Panevėžys) | Christian Democrats | ||
| 104 | 27 | Cooperative activist | Christian Democrats | II (Kaunas) | Labor Federation | ||
| 105 | 28 | Teacher | Christian Democrats | IV (Telšiai) | Christian Democrats | ||
| 106 | 50 | Farmer | Christian Democrats | VI (Utena) | Christian Democrats | ||
| 107 | 39 | Attorney | Social Democrats | V (Panevėžys) | Social Democrats | ||
| 108 | 50 | Farmer | Christian Democrats | I (Marijampolė) | Christian Democrats | ||
| 109 | 32 | Tailor | Christian Democrats | V (Panevėžys) | Christian Democrats | ||
| 110 | 49 | Farmer | Independent | II (Kaunas) | Peasant Union | ||
| 111 | 28 | Pharmacist | Popular Socialist and Peasant | III (Raseiniai) | Peasant Union | ||
| 112 | 36 | Soldier | Popular Socialist and Peasant | I (Marijampolė) | Popular Socialist Democrats | ||
| Name | Parliamentary fraction | Tenure (from) | Tenure (to) | As replacement for | ||
| 1 | Antanas Matulaitis | |||||
| 2 | ||||||
| 3 | Kazys Bieliūnas | Popular Socialist and Peasant | Vincas Meilus | |||
| 4 | Oskaras Biuchleris | German | Rudolfas Kinderis | |||
| 5 | Jonas Bliūdžius | Popular Socialist and Peasant | Konstantinas Žukas | |||
| 6 | Popular Socialist and Peasant | Juozas Lukoševičius | ||||
| 7 | Pranas Povilaitis | |||||
| 8 | Kazys Bizauskas | |||||
| 9 | Voldemaras Vytautas Čarneckis | |||||
| 10 | Jonas Vailokaitis | |||||
| 11 | Pranas Grėbliūnas | Christian Democrats | Jonas Giniūnas | |||
| 12 | Juozas Idzelis | Christian Democrats | Kazys Vosylius | |||
| 13 | Andrius Kardišauskas | Christian Democrats | Vincas Katilius | |||
| 14 | Samuelis Landau | Jewish | Naftalis Fridmanas | |||
| 15 | Feliksas Lesauskas | Christian Democrats | Pranas Šaulys | |||
| 16 | Juozas Liekis | Popular Socialist and Peasant | Jonas Valius | |||
| 17 | Jonas Lingė | Christian Democrats | Jonas Galvydis-Bykauskas | |||
| 18 | Morta Lukošytė | Christian Democrats | Feliksas Lesauskas | |||
| 19 | Pulgis Lumbis | Christian Democrats | Kazimieras Steponas Šaulys | |||
| 20 | Veronika Mackevičiūtė | Christian Democrats | Jurgis Deksnys | |||
| 21 | Jurgis Marčiulionis | Christian Democrats | Mikas Bagdonas | |||
| 22 | Mykolas Marma | Popular Socialist and Peasant | Kazys Škirpa | |||
| 23 | Pranas Povilaitis | Christian Democrats | Jonas Valaitis | |||
| 24 | Antanas Povylius | Social Democrats | ||||
| 25 | Juozas Pronskus | Popular Socialist and Peasant | ||||
| 26 | Pranas Radzevičius | Popular Socialist and Peasant | Kazys Gencevičius | |||
| 27 | Klemensas Skabeika | Popular Socialist and Peasant | ||||
| 28 | Juozas Skyrius | Christian Democrats | Vladas Jurgutis | |||
| 29 | Jonas Steponavičius | Christian Democrats | Jonas Andziulis | |||
| 30 | Kazys Škirpa | Popular Socialist and Peasant | Gabrielė Petkevičaitė | |||
| 31 | Pranas Šmotelis | Popular Socialist and Peasant | Klemensas Skabeika | |||
| 32 | Social Democrats | Antanas Purėnas | ||||
| 33 | Vaclovas Vaidotas | Popular Socialist and Peasant | Jonas Bildušas | |||
| 34 | Jonas Valius | Popular Socialist and Peasant | Motiejus Petrauskas | |||
| 35 | Kazys Vosylius | Christian Democrats | Stasys Balčytis | |||
| 36 | Vincas Žindžius | Popular Socialist and Peasant | Albinas Rimka | |||
| 37 | Kazys Zubauskas | Independent | Kazys Lekeckas | |||
| 38 | Balys Žygelis | Popular Socialist and Peasant | Jonas Masiulis |