| Nicholas IV of Werle | |
| Noble Family: | House of Mecklenburg |
| Father: | John III of Werle |
| Mother: | Matilda of Pomerania |
| Spouse: | Agnes of Lindow-Ruppin |
| Birth Date: | before 1331 |
| Death Date: | between 14 March and 13 November 1354 |
Nicholas IV, Lord of Werle[-Goldberg], nicknamed Poogenoge ("Pig's eyes") (born: before 1331; died: between 14 March and 13 November 1354) was from 1350 to 1354 to Lord of Werle-Goldberg.
He was the son of John III and Matilda of Pomerania (born: abt. 1304, died: 1331). He allegedly received his nickname from the shape and the look in his eyes.
He initially ruled the dominion Werle-Goldberg jointly with his father John III and from 1350 alone. He still signed a peace treaty on 14 March 1354, but is no longer mentioned after 13 November of that year.
He was married to Agnes (died after 1361). Presumably, she was a daughter of daughter of Ulrich II of Lindow-Ruppin. After Nicholas' death, she married John I of Mecklenburg-Stargard.
Nicholas had at least three children: