Lyashenko or Liashenko () is a Ukrainian surname. Notable people with the surname include:
Andriy Lyashenko (born 1998), Ukrainian footballer Elena Liashenko (born 1976), Ukrainian figure skater Liudmyla Liashenko (born 1993), Ukrainian skier and biathlete Roman Lyashenko (1979–2003), Russian ice hockey player Valentina Liashenko (born 1981), Georgian high jumper
See also