Party leader Wynter Kabimba confirmed that the national congress will be held at Tick Boarding School campus in Lusaka’s Lilayi area.
Mr Kabimba said the congress will draw participation from Rainbow members from across the country.
The Rainbow Party leader said all party members drawn from constituency, district and provincial structures all over Zambia will attend the gathering.
He said the event is significant in the growth of the opposition party as it expected to adopt the party manifesto and draw up a program of action.
Mr Kabimba has stated that all critics of the Rainbow Party should come and see how fast the party is growing by the large number of invited delegates and party officials.
He said this national congress is historical in Zambia’s democracy as the Rainbow will become the first political party to go for a national congress within the first six months of its existence.