| Country: | Belgium |
| Previous Election: | 1919 |
| Next Election: | 1925 |
| Seats For Election: | 186 seats in the Chamber of Representatives 93 seats in the Senate |
| Election Date: | 20 November 1921 |
| Heading1: | Chamber of Representatives |
| Party1: | Catholic Party (Belgium) |
| Percentage1: | 37.01 |
| Seats1: | 78 |
| Last Election1: | 70 |
| Party2: | Belgian Labour Party |
| Percentage2: | 34.81 |
| Seats2: | 68 |
| Last Election2: | 70 |
| Party3: | Liberal Party (Belgium) |
| Percentage3: | 17.80 |
| Seats3: | 33 |
| Last Election3: | 34 |
| Party4: | Catholic dissidents |
| Percentage4: | 3.35 |
| Seats4: | 2 |
| Last Election4: | 3 |
| Party5: | Frontpartij |
| Percentage5: | 3.04 |
| Seats5: | 4 |
| Last Election5: | 5 |
| Party6: | Combatants |
| Percentage6: | 1.07 |
| Seats6: | 1 |
| Last Election6: | 2 |
| Color6: |
|
| Heading7: | Senate |
| Party7: | Belgian Labour Party |
| Percentage7: | 35.48 |
| Seats7: | 33 |
| Last Election7: | 20 |
| Party8: | Catholic Party (Belgium) |
| Percentage8: | 32.57 |
| Seats8: | 34 |
| Last Election8: | 43 |
| Party9: | Liberal Party (Belgium) |
| Percentage9: | 19.44 |
| Seats9: | 18 |
| Last Election9: | 30 |
| Percentage10: | 4.99 |
| Seats10: | 5 |
| Last Election10: | new |
| Color10: |
|
| Party11: | Christene Volkspartij |
| Percentage11: | 2.79 |
| Seats11: | 2 |
| Last Election11: | new |
| Party12: | Frontpartij |
| Percentage12: | 1.60 |
| Seats12: | 0 |
| Last Election12: | new |
| Party13: | Christian Workers' Alliance |
| Percentage13: | 0.89 |
| Seats13: | 1 |
| Last Election13: | new |
| Government | |
| Posttitle: | Government after election |
| Before Election: | Carton de Wiart |
| Before Party: | National Unity (Catholic-Lab-Lib) |
| After Election: | Theunis I |
| After Party: | Catholic-Liberal |
General elections were held in Belgium on 20 November 1921.[1] The result was a victory for the Catholic Party, which won 70 of the 186 seats in the Chamber of Representatives.[2] Voter turnout was 91.1% in the Chamber election and 91.0% in the Senate election.[3]
Elections to the nine provincial councils were held one week later, on 27 November 1921.
A Catholic–Liberal government led by Georges Theunis was formed following the elections.
A constitutional change eased the requirements to be a candidate for the Senate. As a compensation, the number of senators elected by provincial councils was increased from 27 to 40 and a new type of senators was introduced: 20 co-opted senators. This gives a total of 153 senators.
The distribution of seats among the electoral districts was as follows:[4] [5]
| Province | Arrondissement(s) | Chamber | Senate | |
|---|---|---|---|---|
| 15 | 7 | |||
| 5 | 5 | |||
| 4 | ||||
| Elected by the provincial council | 5 | |||
| 3 | 4 | |||
| 4 | ||||
| Elected by the provincial council | 3 | |||
| 5 | 4 | |||
| 3 | ||||
| 12 | 6 | |||
| 4 | 4 | |||
| 4 | ||||
| Elected by the provincial council | 5 | |||
| 4 | 2 | |||
| 5 | 3 | |||
| 5 | 4 | |||
| 3 | ||||
| 5 | 2 | |||
| Elected by the provincial council | 4 | |||
| 7 | 3 | |||
| 26 | 13 | |||
| 4 | 2 | |||
| Elected by the provincial council | 7 | |||
| 6 | 3 | |||
| 11 | 7 | |||
| 3 | ||||
| 7 | 5 | |||
| 4 | ||||
| Elected by the provincial council | 6 | |||
| 4 | 2 | |||
| 13 | 7 | |||
| 5 | 2 | |||
| Elected by the provincial council | 4 | |||
| 3 | 3 | |||
| 3 | ||||
| Elected by the provincial council | 3 | |||
| 5 | 5 | |||
| 4 | ||||
| Elected by the provincial council | 3 | |||
| Total | 186 | 93 + 40 | ||
Additionally, 20 senators were co-opted.