The annual event, at the Polish capital's Palace of Culture and Science venue, is expected to be attended by exhibitors and authors from across the world, including countries as far afield such as China, India and South Korea.
Meanwhile, Ukraine will be a special partner country of this year's fair, with representatives from 40 different Ukrainian publishing houses planning to visit Warsaw, according to Polish state news agency PAP.
At a press conference promoting the event, the Ukrainian ambassador to Poland, Vasyl Zvarych, on Tuesday asked Polish publishers to support their Ukrainian counterparts and to work together "on the common literary front."
"As Ukrainians, we want our books to become more and more popular in the world so that Ukrainian authors are read in foreign languages," Zvarych said.
He added that "many Ukrainian books have already been translated by Polish translators," which he said was "an expression of solidarity" amid Russia's invasion of his country.
He told the press conference that Ukrainian literature was being extensively translated into other languages in a project overseen by Ukraine's First Lady Olena Zelenska.
Tuesday was day 426 of Russia’s war on Ukraine, which began on February 24, 2022.