A safety gate mounting kit is disclosed for use in the installation of a safety gate to a post, such as a newel post or similar structure, such kit having a first pair of clamping members for attachment to a top portion of a rectangular post and a second pair of clamping members for attachment to a lower portion of a rectangular post. First and second round post adapters for positioning around opposite sides of a round section of the post are provided for insertion between one pair of the clamping members. A wooden gate attachment member is provided to be attached to the first and second clamping members to which wooden gate attachment member the assembly/attachment hardware of a safety gate can be attached.