Hugo Gernsback
The Hugo Awards or "Hugos" are the annual achievement awards presented at the World Science Fiction Convention, selected in a process that ends with vote by current Convention members. They originated and acquired the "Hugo" nickname during the 1950s and were formally defined as a convention responsibility under the name "Science Fiction Achievement Awards" early in the 1960s. The nickname soon became almost universal and its use legally protected; "Hugo Award(s)" replaced the longer name in all official uses after the 1991 cycle.
Seiun Award
It is similar to the Hugo Award, which is presented by the members of the World Science Fiction Society, in that all of the members of the presenting convention are eligible to participate in the selection process. But it is not strictly correct to call it Japan's "equivalent" to the Hugo Awards, as the Hugo Awards are open to works from anywhere in any language while the Seiun implicitly limited the area and the language like as the BSFA Award.