Wars, violence and persecution are expected to drive millions from their homes, with Sudan remaining at the centre of the crisis.
The Danish Refugee Council warned that 4.2 million people could be newly displaced globally by 2027, based on data through 2025.
The projection adds to more than 117 million people already displaced, as Sudan continues to generate large-scale humanitarian needs.
The report said Sudan remains a key driver of displacement, though crises are now spreading across a wider range of countries.
Aid cuts have worsened the situation, with declining funding undermining efforts to stabilise conflict zones and protect vulnerable communities.
The agency said reduced support risks fuelling further displacement as violence and instability persist in Sudan.
Officials warned the global response is failing, as humanitarian systems strain under rising needs and shrinking resources.
For families in Sudan, the report said, survival grows harder as conflict deepens and support continues to erode.
