Jack Laurence Chalker was an American science fiction author. Chalker was also a Baltimore City Schools history teacher in Maryland for 12 years, retiring during 1978 to write full-time. He also was a member of the Washington Science Fiction Association and was involved in the founding of the Baltimore Science Fiction Society.

The Baltimore Science Fiction Society (BSFS) is a literary organization focusing on science fiction, fantasy and related genres. A 501c3 literary society based in Baltimore, Maryland, the BSFS sponsors Balticon, the Maryland Regional Science Fiction Convention.