| Jan Mikołajczak | |
| Birth Name: | Janusz Stanisław Mikołajczak |
| Birth Date: | 30 March 1907 |
| Birth Place: | Poznań, German Empire |
| Death Place: | Poznań, Poland |
| Height: | 172 cm |
| Weight: | 68 kg |
| Sport: | Rowing |
| Club: | AZS Poznań |
Janusz Stanisław Krenz-Mikołajczak (30 March 1907 – 15 December 2002) was a Polish rower who competed in the 1932 Summer Olympics.
In 1932, he won the bronze medal with his partner Henryk Budziński in the coxless pair event. He was born in Poznań and died in Poznań.[1]