The former Boomtown Rats frontman charged that France's pledge to match Germany's €30m (£26m, $43m) donation to East Africa is not enough to help the starving and the sick.
"I am shocked and appalled by the mealy-mouthed penny-pinching of the French whilst God knows how many die of thirst and hunger in unspeakable agony around one of the largest French military bases in the world in Djibouti, Somalia, Kenya and Ethiopia," Geldof said.
He continued: "I couldn't care less that [the French] 'have equalled Germany'… What does that mean except that the Germans too are guilty of turning away from the weak, the mute, the hungry, the thirsty and the dying of Africa?
"How can it be that overnight hundreds of billions of euros exist to stabilise faulty European economies, but for a dying 12 million fellow human beings that can absolutely be protected for a few sou (pennies), there is nothing."
Geldof went on to challenge French President Nicolas Sarkozy to revise his pledge, adding that charity is "in [Sarkozy's] nature and that of [his] great country".
The 'Rat Trap' singer has campaigned to end African famine for more than 25 years.
He famously organised the chart-topping charity single 'Do They Know It's Christmas?' in 1984 and the Live Aid and Live 8 concerts.
Geldof recently admitted that he considered suicide following his 1995 divorce from ex-wife Paula Yates.
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Watch Bob Geldof perform 'This Is The World Calling' below: