The Quebec-based manufacturer says more than 70 per cent of the demand is expected to come in the 100- to 149-seat category, which includes Bombardier's CSeries.
The main driver behind the decrease of 300 units is reduced growth in global gross domestic product.
Still, Bombardier believes it will capture half of the available market.
The company says China will be the world's second-largest market with 2,200 deliveries through 2031, topped only by the United States, which will lead with 4,730 expected deliveries.
Europe and Russia will trail with 2,240 units.
Bombardier issued its market forecast Wednesday at a conference for the media and industry analysts ahead of the Farnborough air show in July.
The forecast for business jets is unchanged from last year at 24,000 units worth about US$648 billion.
Bombardier (TSX:BBD.B) is the world's largest business jet manufacturer with 38 per cent market share.
It expects 9,800 deliveries worth US$266 billion over the next decade and 14,200 deliveries worth US$382 billion between 2022 and 2031.
The large-cabin business jet market, for which Bombardier has several products in development, is expected to remain strong.
North America is expected to take 9,500 business aircraft through 2031, followed by Europe, with 3,920 aircraft.
China will become the third-largest market for business jet deliveries, with 2,420 planes. Bombardier said.