I have very limited space so I'm looking for multi grafted trees to extend the fruiting season on fruit trees. Are there any multi grafted fig trees? If there are were would I get one? And if not why not, there are many different multi grafted fruit trees online. I just can't find a fig.

Search this site for franken fig. You should see some pics. I do it you can too its not too hard.

dbfurlo, Welcome to the forum.  You are going to have to learn to graft.  It's on my list this year.  You will find many people happy to help you here.

What planting zone are you in?

Suzi

Zone 11... San Diego Ca

http://figs4funforum.websitetoolbox.com/post/chipbud-grafting-4743760

Welcome to the forum
The time for budding figs in your zone starts now and goes on until late summer
Above link provides excellent illustrations,  reading and  guidance on how best to do it for a successful outcome.
IMO you should find now an healthy potted fig, a recognized robust root sock (Brown Turkey ?) say a 2 year old tree with 3 or 4 robust limbs and start from there
You shall need to find the scions of your choice from a scion exchange, nursery or from a fellow member.
If you have access to wild figs from Nature, this could also be an excellent option
Good luck

Francisco
Portugal
(also in a zone 11)