Alternatively you could put the AMIs in an array, and just iterate over that array. locals { nomad_ami = [ "${data.aws_ami.nomadclient_tick.image_i

Alternatively you could put the AMIs in an array, and just iterate over that array. locals { nomad_ami = [ "${data.aws_ami.nomadclient_tick.image_id}", "${data.aws_ami.nomadclient_tock.image_id}", ] } resource "aws_instance" "nomadclients" { count = 6 ami = "${element(local.nomad_ami, count.index)}" ... }