Is there a list of research funding agencies worldwide, ordered by money spent? I have found a Wikipedia page ranking countries based on amount of funding and GDP.  Is there a list that breaks this down further by funding agencies? 

For example, the wiki list says US funding, but I imagine it's not so simple or clear where it comes from.  For example, it's not clear how much comes from NSF, NIH, and DARPA.

How can I find out the largest funding agnecies in the world?
I have not found a worlwide list, but I would suggest you to ask for a Demo in these websites:


Research Professional
Pivot


I found the links here.