Jan Wejher (1580–1626) was a Polish nobleman, son of Ernest Wejher and Anna Mortęska. He held many offices and was an officer of the army in the Polish–Lithuanian Commonwealth and a courtier of the Polish king Sigismund III from the age of thirteen.
- Position held
- Governor of Chełmno, Q9377082, Q65117046, Q66200803
- Citizenship
- Polish–Lithuanian Commonwealth
- Born
- 1580
- Died
- 1626