Robert Smolanczuk (born in Olecko, Poland) is a Polish theoretical physicist.
He received his doctorate from the Soltan Institute for Nuclear Studies in 1996.
He later visited Lawrence Berkeley National Laboratory as a Fulbright Fellow between 1998-2000.
He predicted in late 1998 that a lead-and-krypton collision technique could produce the element oganesson, at that time considered impossible by most scientists involved in heavy-element research.
He received the Nitchke Award in 2000 for developing a phenomenological model of synthesis of superheavy nuclei.
He currently works at the National Centre for Nuclear Research in Otwock, Poland.