Air chief marshal (Australia)

{{Infobox military rank

| name = Air chief marshal

| native_name =

| image = RAAF O10(OF9) ACM rank ins.svg

| image_size = 150px

| caption = Rank Insignia for Air Chief Marshal

| image2 = Australian Air Chief Marshal Officer Distinguishing Flag.svg

| image_size2 = 250px

| caption2 = RAAF ACM Command Flag (CDF)

| image3 =

| image_size3 =

| caption3 =

| country = Australia

| service branch = {{air force|AUS}}

| abbreviation = ACM

| rank group = Air officer

| rank = Four-star

| NATO rank =

| Non-NATO rank =

| pay grade = O10

| formation = 1965

| abolished =

| higher rank = Marshal of the RAAF

| lower rank = Air marshal

| equivalents = {{bulleted list|{{nowrap|Admiral (RAN)}}|General (Army)}}

| history =

}}{{Short description|Rank of the Royal Australian Air Force}}

{{for|other countries which use this rank|Air chief marshal}}

{{Use dmy dates|date=July 2016}}

{{Use Australian English|date=July 2016}}

{{refimprove|date=November 2023}}

Air chief marshal (abbreviated as ACM) is the highest active rank of the Royal Australian Air Force and was created as a direct equivalent of the British Royal Air Force rank of air chief marshal. It is also considered a four-star rank. The only time the rank is held is when the Chief of the Defence Force is an Air Force officer.

Air chief marshal is a higher rank than air marshal and is a lower rank than Marshal of the Royal Australian Air Force, which has only ever been awarded as an honorary rank. Air chief marshal is a direct equivalent of admiral in the Royal Australian Navy and general in the Australian Army.