Abstract: A brace assembly for fence and gate posts as well as corner posts is disclosed and includes upper and lower bracket assemblies for clamped engagement with a fence post. Each bracket assembly includes angular bracket members which may include diagonal flanges which serve to receive the ends of adjustable braces. Lower bracket assemblies serve to attach ground engaging members to the post. The braces are axially adjustable for attachment to the ground engaging members which may be inclined for contact with sloped terrain. A modified form of a bracket assembly includes a clamping plate with a boss through which extends a gate pintle arm to permit a fence post to serve as a gate post. A further modification of the bracket assemblies permits a steel fence post to serve as a fence corner post with braces extending downwardly and rearwardly from the corner post. Additional bracing may extend horizontally from the corner post to adjacent fence posts.