Back IV Lüdviq (Pfals kürfürstü) Azerbaijani Лудвиг IV (Пфалц) Bulgarian Ludvík IV. Falcký Czech Ludvig 4., kurfyrste af Pfalz Danish Ludwig IV. (Pfalz) German Λουδοβίκος Δ΄ του Παλατινάτου Greek Ludoviko la 4-a (Palatinato) Esperanto Luis IV del Palatinado Spanish Louis IV du Palatinat French לודוויג הרביעי, הנסיך הבוחר מפפאלץ HE
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| Louis IV | |
|---|---|
 Coat of arms | |
| Elector Palatine | |
| Reign | 30 December 1436 – 13 August 1449 |
| Predecessor | Louis III |
| Successor | Frederick I |
| Born | 1 January 1424 Heidelberg |
| Died | 13 August 1449 (aged 25) Worms |
| Burial | |
| Spouse | Margarete of Savoy |
| Issue | Philip, Elector Palatine |
| House | Wittelsbach |
| Father | Louis III, Elector Palatine |
| Mother | Matilda of Savoy |
Louis IV, Count Palatine of the Rhine (1 January 1424, Heidelberg – 13 August 1449, Worms) was an Elector Palatine of the Rhine from the House of Wittelsbach in 1436 - 1449.