Searches for New Physics at Hera

The H1 and ZEUS experiments collected about 110 pb^-1 of integrated luminosity in e⁺p collision and about 16 pb^-1 in e^-p collision during HERA I data taking (1994-2000). Data were analysed searching for contact interactions, extra-dimensions, R-parity violating SUSY, lepton-flavor violating and flavor-changing neutral current interactions. Possible deviations from Standard Model were furthermore investigated studying events with isolated leptons and high missing transverse momentum, or with two or more isolated high transverse momentum objects (photons, leptons, jets or neutrinos). A summary of the results is given. The first results of HERA II (2003-2004 running period) are also shown.