There are quite a few. Some decent ones I have heard good things about:
* rootbsd.net
* arp networks
* vultr
There are quite a few cheap-ish dedicated server vendors out there that can either be ordered with FreeBSD or provide some means to install it yourself.
I have had good luck with arpnetworks. So far only noticed one outage in three years of use. Have had good network and CPU performance. They don't do tech support for things inside your operating system, but they are always helpful when I ask them to do things on their end.
I reccomend vultr. I run OpenBSD not FreeBSD, but it is just a standard KVM VM you can run whatever you want on, and unlike most BSD offering VPS providers, they aren't double the price of DO and friends.
* rootbsd.net * arp networks * vultr
There are quite a few cheap-ish dedicated server vendors out there that can either be ordered with FreeBSD or provide some means to install it yourself.