Alicja Sakaguchi (born 1954 in Szczecin) is a linguist and university professor in the fields of Esperanto and interlinguistics.
Alicja Sakaguchi earned a master's degree after studying Hungarian and Esperantology at Eötvös Loránd University in Budapest (1974 to 1979); she completed her doctorate in 1982. From 1981 to 1985 she was a lecturer at the University of Paderborn, then from 1986 to 1998 at the Goethe University Frankfurt. She received her habilitation in 2000 after publishing a book on interlinguistics. From 2001 to 2002 she was assistant professor of modern languages at Adam Mickiewicz University in Poznań; since 2003 she has been a professor there, teaching interlinguistics, Esperanto, German and intercultural communication.
She is married to Takashi Sakaguchi, a Japanese man whom she met through the Esperanto movement, and has two adult children, Dai and Leo, who are native speakers of Esperanto. Both sons were born in Mömbris in Germany, a town clos