Photoinduced excitation energy transport dynamics in oligothiophene-fulterene linked dyads, nT-C-60 (n = 4, 8, and 12), have been investigated by femtosecond fluorescence up-conversion. In 8T-C-60 and 12T-C-60, each time profile of the fluorescence due to the (1)nT* moiety consists of two components. The subpicosecond component and a few picosecond components were experimentally evaluated depending on the lengths of oligothiophenes (n =8 and 12) and on the analyzing wavelength of the fluorescence. However, the time trace of the fluorescence due to (1)4T*-C-60 decayed with a single short component in similar to 300 fs due to direct excited energy transfer (EET) from the (1)4T* moiety to the C-60 moiety. On the basis of the kinetic models considering the short and long locally pi-conjugative thiophene segments in ST-C-60 and 12T-C-60, the rate parameters of the elemental processes were evaluated. Sub-picosecond time constants of nT-C-60 were found to be EET from the thiophene segment vicinal to the C-60 moiety and intrachain energy transfer. Slower picosecond dynamics mainly corresponds to EET from the thiophene segments apart from the C-60 moiety.