Jetta of the Lowlands is a science fiction novel by American author Ray Cummings.

In the year 2020 the oceans have drained from the surface of the earth, leaving the one-time sea floor bared to sun and wind.

It is deadly hot, down in the depth of the great Lowland areas, and it is only adventurers and outcasts of human kind who can endure life in what few habital places left.

Fantastic and sinister are the Lowlands into which Philip Grant descends on his dangerous assignment.

Jetta of the Lowlands was first published in Astounding Stories of Super-Science in September, October and November, 1930.

Ray Cummings (1887-1957) was an American author of science fiction, rated one of the "founding fathers of the science fiction pulp genre".

Having worked for Thomas Alva Edison, Ray Cummings was inspired by science’s possibilities and began to write science fiction.

His most highly regarded work was the novel The Girl in the Golden Atom published in 1922. His career resulted in some 750 novels and short stories, using also the pen names Ray King, Gabrielle Cummings, and Gabriel Wilson.