This page provides a list of Lisp-friendly web hosting services, i.e. companies or organizations providing services or online tools that make it possible -- or easier -- to deploy web-based Lisp applications. Information and comments (features, reliability, costs, etc.) by users of such services are particularly appreciated.
The Tech Co-op 
The Tech Co-op is the leading provider of Lisp related hosting services.
From basic shared hosting for lisp, scheme and other non-mainstream languages, through Xen VPS and dedicated server offerings, no other organisation has the amount experience and background with Common Lisp that tech.coop can offer.
The Tech Co-op is a not-for-profit, member owned, democratically operated services co-operative. The majority of the membership are lisp programmers.
On top of development and hosting services, the co-op provides a home for many lisp community sites (common-lisp.net, cliki.net, wiki.alu.org and more). Email drewc at tech.coop or /join #tech.coop to learn more.
SDF Public Access UNIX Systems
The "arpa" membership option also provides access to OpenLisp, an ISLISP implementation.
Copyleft Software AS
Small, Lisp-friendly Norwegian ISP. (Targeting the Norwegian market, really, so maybe this should be in some kind of local section?)
Lisp hosting at Zill.Net
Lisp-Friendly Web hosting company. Can run CLISP, CMUCL/SBCL for you. Primarily using OpenBSD/FreeBSD but can custom configure. "Standard" Lisp hosting at $24.95 per month, with ssh access to shared server - your lisp image runs behind Apache as a proxy. DNS service included.
Dedicated Server Hosting
BODHost support Lisp on all server hosting packages
http://common-lisp.net
This is not really Lisp Hosting but we are offering free CVS access,
mailinglists and some web and ftp space. Restrictions apply, see within.
Bytemark
Hosting
This is not really "Lisp Hosting" out of the box, either, but you do get a full
Debian/Woody partition with 3GB and root access, for 15 GBP (approx. 24 USD)
per month. Install CMUCL/clisp/your-favorite-implementation and go to town.
You can also ask for other distributions and (for more $$ (duh)) more disk and
memory space.
Focus is on Lisp friendliness. Sites providing access to PHP are a dime a dozen, we are interested in Lisp here.
If none of these are suitable, you could just use any host offering CGI support, of course. Most people would consider that a second-best, though