diff --git a/lib/vmpooler.rb b/lib/vmpooler.rb
index a9eb4eb..70bb819 100644
--- a/lib/vmpooler.rb
+++ b/lib/vmpooler.rb
@@ -32,6 +32,7 @@ module Vmpooler
     parsed_config[:config]['task_limit']   ||= 10
     parsed_config[:config]['vm_checktime'] ||= 15
     parsed_config[:config]['vm_lifetime']  ||= 24
+    parsed_config[:config]['prefix']       ||= ''
 
     # Create an index of pool aliases
     parsed_config[:pools].each do |pool|
diff --git a/lib/vmpooler/pool_manager.rb b/lib/vmpooler/pool_manager.rb
index eb9504f..7a2c7b5 100644
--- a/lib/vmpooler/pool_manager.rb
+++ b/lib/vmpooler/pool_manager.rb
@@ -189,7 +189,7 @@ module Vmpooler
 
         # Generate a randomized hostname
         o = [('a'..'z'), ('0'..'9')].map(&:to_a).flatten
-        vm['hostname'] = o[rand(25)] + (0...14).map { o[rand(o.length)] }.join
+        vm['hostname'] = $config[:config]['prefix'] + o[rand(25)] + (0...14).map { o[rand(o.length)] }.join
 
         # Add VM to Redis inventory ('pending' pool)
         $redis.sadd('vmpooler__pending__' + vm['template'], vm['hostname'])
diff --git a/vmpooler.yaml.example b/vmpooler.yaml.example
index 6e1c5d4..4c6ef24 100644
--- a/vmpooler.yaml.example
+++ b/vmpooler.yaml.example
@@ -161,6 +161,9 @@
 #
 #   - domain
 #     If set, returns a top-level 'domain' JSON key in POST requests
+#
+#   - prefix
+#     If set, prefixes all created VMs with this string.
 
 # Example:
 
@@ -176,6 +179,7 @@
     - 'created_by'
     - 'project'
   domain: 'company.com'
+  prefix: ''
 
 # :pools:
 #