Neutrino-astronomy with the MACRO experiment at Gran Sasso

The MACRO experiment at Gran Sasso is collecting muons since February 1989. These muons are induced by charged current interactions of atmospheric and , possibly, astrophysical muon neutrinos below the apparatus. A search has been made for discrete astrophysical sources of VHE and UHE neutrinos using the upward going muons direction information. Given the large area and the long period of data taking MACRO is, at the moment, able to set very compe titive upper limits to the flux of neutrinos from most of the sources consi dered in the search.