Magnaghi is an Italian surname. Notable people with the surname include:
Alberto Magnaghi (born 1941), Italian scholar of urban planning; Debora Magnaghi (born 1970), Italian voice actress; Sara Magnaghi (born 1993), Italian rower; Simone Magnaghi (born 1993), Italian footballer.
The name may also refer to: Ammiraglio Magnaghi, hydrographic survey vessel in service with Italian Navy, named after admiral (1839–1902).
See also Magnago (disambiguation)