SYDNEY, Australia — The comedian John Oliver, who made a name for himself as host of an HBO talk show, will now have his name in a slightly more embarrassing locale: outside a koala chlamydia clinic in Australia.

While he is known for clever stunts — Mr. Oliver recently published a children’s book about a gay bunny and started a church — his latest prank may have backfired.

After Mr. Oliver revealed that he had bought several items from the Australian actor Russell Crowe’s divorce auction, Mr. Crowe found “a cool way” to honor him.

That “cool way” turned out to be a ward at a zoo, now called “The John Oliver Koala Chlamydia Ward.”