Wildlife SOS claimed the website was offering an array of wildlife trophies, snares and manuals on hunting - including alligator heads, preserved snakes, butterflies, starfish, rare beetles and seahorses along with dangerous trapping and killing devices like snares.
The body noted it was "incredulous" that a company like Amazon would list items for sale listed under protected species in India.
An Amazon India spokesperson, however, said the company supports wildlife protection efforts and it was in the process of informing the seller about the concerns raised so that "corrective action" can be taken.
According to SOS, it has launched a petition asking Amazon to stop selling such items that encourage or propagate maiming, hunting and killing of wildlife.
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The petition has gathered nearly 7,000 signatures, with animal lovers across the globe expressing their outrage and vowing to boycott the retailer, it said.
The campaign aims not just to implore the website to stop selling these items but also educating people about snares and the suffering caused to innocent animals by their use, it said in a statement.
It alleged that traps and snares are being sold on one of the world's leading online retailer's website (Amazon) not just in the USA but also in India where all wild animals are protected under the Wildlife Protection Act 1972 and hunting is illegal.