The United Nations Refugee Commissioner, Filippo Grandi, is among prominent voices to set out the case on Tuesday for plugging a huge funding gap.
The funding gap is in response to the steadily worsening plight of displaced Venezuelans at a Brussels conference.
Venezuela is mired in a deep economic and political crisis.
An overwhelming majority of the estimated 4.5 million Venezuelans who have fled their country have remained in the Latin American and Caribbean region.
Grandi, along with EU Foreign Policy Chief Federica Mogherini among others, is to call at the conference for greater support from the world community, particularly for countries hosting Venezuelans.
So far, only 52 per cent of the $738 million requested by the UN for 2019 has been secured.
This was according to Eduardo Stein, joint Venezuela representative for the International Organisation for Migration (IOM) and the UN refugee agency (UNHCR.)
In 2020, the number of Venezuelan migrants or refugees is set to reach 6.5 million, Stein said on Monday in Brussels, so the need for international solidarity will increase further.
Venezuelans, who face shortages of basic goods including medication in their home country, are vulnerable to increasing levels of xenophobia abroad, he added, as well as abuse and exploitation.
Host communities face a huge strain on their budget and social services, Stein said.
International funds could help abate these tensions.
The oil-rich South American country has been shaken by a violent power struggle between President Nicolas Maduro’s government and the opposition, led by Juan Guaido.
