Where can I find the regulatory guidance for the proper way for a commissioned officer to address an NCO?

This is one of those questions that appears from time to time on RP that makes me wonder what is happening in today's military. SSG Wise I'm assuming that the officer in question is a junior officer, 2nd or 1st Lt. As a SNCO you should sit them down and calmly explain the error of their ways. The customs and courtesies of service are there for a reason. And that addressing NCO's by their given names instead of their rank is unprofessional and disrespectful to an individual that has earned their rank. I would have gone high and to the right if some shavetail, fresh from TBS, greeted me with a cheery, "Morning Chuck". OH NO, NO, NO! That's, GYSGT O'Connell, Sir, SNCO of Marines. While you may swap spit and towel snaps with your fellow O's, and call each other by clever Top-gun-like nicknames, you will address and treat with respect the NCO's in your charge as they will address and treat you with respect. This ain't play camp, you are here to lead.

I worked hard to earn the name master Sgt. And that officer should be told if not by a staff or senior Nco then try going to another officer to get him straight.

Reading some of the comments below makes
Me
Consider if some have missed the point of the question. Restating, it appears the question, is there any regulatory requirement on how to address someone? This officer believes he can address NCOs by their first. Mae in front of the troops.

I would start with the UCMJ where it talks about respect and disrespect towards officers and NCOs and the consequences of not rendering proper courtesies and respect. There used to be a study guide regarding customs and courtesy of the military. In that pamphlet consequences were annotated by citations to the proper regulations.

Being discourteous to either an NCO or officer carries a stiff penalty per UCMJ. I'm surprised this question comes up. This has always been simply understood and didn't need explaining after basic training or ROTC/commissioning program.

ONLY If he is in Special Forces. Otherwise it is military Rank (SSG, NOT E-6) and Last Name.

I don't understand why it's an issue. It doesn't hurt anything and I don't think many senior to you do it. basically, your boss can call you by whatever name he prefers. I would prefer my rank and last name, my rank, or just my last name, but it's not something I would let get to me, unless it is done in a disrespectful manner. To some, it is a term of endearment. If it does bother you, go to that officer, let him/her know how you feel, and request that use a more formal term of address for you. If they don't, then get used to it. Maybe if your first name is all they go by, then it probably is a problem and should be addressed formally if necessary.

I would reply that you earned the title, you are to be addressed as Ssg, Sgt, Sfc, 1sg, whatever. It is HIGHLY unprofessional unless your in group (Special Forces) where sometimes that's used for opsec or integrity. There is a regulation, Google it. If you can't find it contact your local NCO Academy, thete should have the answer. Let me know if you find it

Even though this is wrong, call him by his first name. For me, if it is just him and me, I will have no issues. However, if there were junior enlisted (E1-E4) he should address me by rank and last name. If he doesn't, I would pull aside an explain to him that by calling me by first name in front of junior soldiers is killing my authority over them. I would give him an example on how he would like it if I call him by first name in front junior officers and even front of senior officers.

Lack of military discipline by wannabe friends establishes inconsistency in leadership that perplexes sound leadership as well as morale. In my tenure as a senior enlisted man, when I saw faternization of junior officers out side of the normal hierarchy of general duties or the weakening of the chain of command by immature contact leadership, it heightened my anger and disrespect for those who violated this mutually respected rank structure. Even worse was a command led by micro managers who bypassed seniors! Good military pride is structured by observing the chain of command built on holding each level responsible and not based on personality but absolute competence, high performance standards and loyalty! Leadership conduct comes with each step in advancement and respect is the goal and not patronization to be likeable!

I cannot speak for the other services, and from the comments, I cannot speak for the "modern Navy" but back in my day. In the shop you called a person by their name. First if you were friends or last if you weren't or if that's what they preferred to be called. Some even had nick names. If the Shop had a LPO he was addressed by his last name as a sign of respect All Chief's were CHIEF. Officers were called by their Rank and name or Mister ____ . The X.O. was XO and the Skipper was The SKIPPER When you have a shop full of 1st @nd and 3rd class Petty officers plus Airmen it was unthinkable to call anyone "Petty Officer Such an such. We did not have that much time. We were too busy trying to keep the Missiles on the roof and keep the birds armed. This was all behind the scenes. In public or as Introductions that is another thing and all that is spelled out in the Blue Jackets Manual for the Enlisted and the Newly Commissioned Naval Officers Guide for Officers.

Call him by his first name and see how he reacts!