Old City Publishing (OCP) is an independent publishing organization that has published journals and monographs since 1997. Its catalog spans humanities and science, serving readers seeking scholarly content across both fields. The company provides information about journal subscriptions and article orders, with resources that include annual journal rate lists and options for purchasing individual articles. It also offers information on reprints and open access, as well as licensing services for its publications.

OCP shares updates about its titles, editors, and publishing activities through its news section. Recent announcements include the launch of NLOQO Critical Reviews, which will feature articles intended to help researchers understand emerging areas in nonlinear optics and quantum optics. The site also reports on editorial news, new books, and awards in marine environmental engineering. In addition to its publishing and ordering resources, Old City Publishing provides contact details, publication ethics and peer review policies, terms of use, privacy information, and accessibility guidance. Its offerings bring together scholarly publications and practical services for readers, authors, and institutions.