Is Homo sapiens the only extant species of genus "Homo"?
Is Homo sapiens the only extant species of genus “Homo”?

Yes, Homo sapiens is the only species left in the genus Homo. To be more accurate, some even consider all modern humans as being part of the same subspecies Homo sapiens sapiens. In those terms, Homo sapiens sapiens is the only subspecies left in the genus Homo.

There were other lineages before though but they got extinct.

Other Homo lineages that existed

There were other Homo lineages that went extinct. Consider the followings for example


H. habilis
H. gautengensis 
H. erectus
H. neanderthalensis (sometimes called H. sapiens neanderthalensis)
H. heidelbergensis 


Related posts

Here are two other posts that may be of interest to you


Does it make sense to classify all humans in a single species?
How could humans have interbred with Neanderthals if we're a different species?