diff --git a/share/completions/light.fish b/share/completions/light.fish
new file mode 100644
index 000000000..5b33abba8
--- /dev/null
+++ b/share/completions/light.fish
@@ -0,0 +1,24 @@
+# Light is a program to control backlight controllers under GNU/Linux.
+# See: https://github.com/haikarainen/light
+
+function __fish_print_light_controllers
+  command light -L
+end
+
+complete -c light -s h -d 'Print help and exit'
+complete -c light -s V -d 'Print version info and exit'
+complete -c light -s G -d 'Get value (default)'
+complete -c light -s S -x -d 'Set value'
+complete -c light -s A -x -d 'Add value'
+complete -c light -s U -x -d 'Subtract value'
+complete -c light -s L -d 'List controllers'
+complete -c light -s I -d 'Restore brightness'
+complete -c light -s O -d 'Save brightness'
+complete -c light -s b -d 'Brightness (default)'
+complete -c light -s m -d 'Maximum brightness'
+complete -c light -s c -d 'Minimum cap'
+complete -c light -s a -d 'Selects controller automatically (default)'
+complete -c light -s s -a '(__fish_print_light_controllers)' -x -d 'Specify controller to use'
+complete -c light -s p -d 'Interpret & output values in percent'
+complete -c light -s r -d 'Interpret & output values in raw mode'
+complete -c light -s v -x -d 'Sets the verbosity level' -a '0\tRead\ values 1\tRead\ values\ \&\ errors 2\tRead\ values,\ erros\ \&\ warnings 3\tRead\ values,\ errors,\ warnings\ \&\ notices'