Mikolajczak

Mikolajczak or Mikołajczak is a surname. Notable people with the surname include:
 * Celina Mikolajczak, American battery engineer and amateur astronomer
 * Christian Mikolajczak (born 1981), German footballer
 * Detlef Mikolajczak (born 1964), German footballer
 * Martyna Mikołajczak (born 1991), Polish rower
 * Tomasz Mikołajczak (born 1987), Polish footballer