One of the burials found by a Swedish-Egyptian team still had the linen used to mummify it, antiquities ministry head Dr Ayman Ashmawy said.
The burials date from Egypt's 18th dynasty (1549/1550-1292 BC).
Meanwhile an Egyptian-Austrian team discovered part of a cemetery and a Swiss team found a statue of a woman.
The burials were found by archaeologists at the Gebel al-Silsila site. One was a tomb carved into rock for a child aged between two and three. In addition to the mummy linen, organic material from the remains of a wooden coffin was also found.
