Ancestor is a science fiction thriller novel by American writer Scott Sigler.

[1] Ancestor follows PJ Colding as he and his crew are tasked with transporting a team of scientists to a remote snow-covered landscape to finish their project: to recreate the ancestor of all humanity in order to provide life-saving organs that would be compatible with all people.

As a snow storm threatens to trap them on the island, the scientists succeed beyond their wildest expectations.

Critical reception for the 2010 re-release of Ancestor has been positive, with Nerdist writing "It’s like Michael Crichton and Stephen King had a fabulous, bouncing baby".

[2] The Guardian criticized the prose and characterisation as "rudimentary" but praised the pacing and denouement.