Military ranks of the Thai armed forces

Rank group	Senior NCOs																						Junior NCOs						Enlisted
Royal Thai Army[2]																																			No insignia
	จ่าสิบเอก Cha sip ek						จ่าสิบโท Cha sip tho		จ่าสิบตรี Cha sip tri								สิบเอก Sip ek						สิบโท Sip tho						สิบตรี Sip tri						พลทหาร Phon thahan
Anglicised version	Sergeant Major 1st Class						Sergeant Major 2nd Class		Sergeant Major 3rd Class								Sergeant						Corporal						Lance Corporal						Private
Abbreviation[3]	จ.ส.อ. SM1						จ.ส.ท. SM2		จ.ส.ต. SM3								ส.อ. Sgt.						ส.ท. Cpl.						ส.ต. Lcpl.						พลฯ Pvt.

Private 1st class is a rank assigned to conscripts after they have finished specialist training. They wear the same insignia as a lance corporal, who is a member who has completed his conscription obligation, and who has undertaken training at NCO school.

The rank of "Special Sergeant Major 1st Class" (Thai: จ่าสิบเอกพิเศษ, romanized: Cha Sip Ek Phiset) is an honorary rank given to senior enlisted members who are deserving of recognition above and beyond that of the highest enlisted rank. There is no difference in the rank insignia worn, and they do not outrank the normal master sergeant 1st class, although in a group situation they will normally be assigned control. They receive a higher salary. In the same way, the RTN has the rating of "fleet chief petty officer (special rank)" and the RTAF has the rank of "special flight sergeant 1st class".

Rank group	General/flag officers										Senior officers						Junior officers								Officer cadet
Royal Thai Navy[2]
	จอมพลเรือ Chom phon ruea		พลเรือเอก Phon ruea ek		พลเรือโท Phon ruea tho		พลเรือตรี Phon ruea tri				นาวาเอก Nawa ek		นาวาโท Nawa tho		นาวาตรี Nawa tri		เรือเอก Ruea ek		เรือโท Ruea tho			เรือตรี Ruea tri			นักเรียนนายเรือ Nak-rian nairuea
Anglicised version	Admiral of the fleet		Admiral		Vice admiral		Rear admiral				Captain		Commander		Lieutenant commander		Lieutenant		Lieutenant junior grade			Sub Lieutenant			Naval Cadet
Abbreviation[3]	-		พล.ร.อ. Adm.		พล.ร.ท. VAdm.		พล.ร.ต. RAdm.				น.อ. Capt.		น.ท. Cdr.		น.ต. LCdr.		ร.อ. Lt.		ร.ท. Lt.JG.			ร.ต. SubLt.			นนร. -

Naval officers will additionally add the post-nominal ร.น. as an abbreviation for ราชนาวี (râat-chá-naa-wee, literally "the Royal Navy").

Rank group	Senior NCOs																						Junior NCOs						Enlisted
Royal Thai Navy[2]																																			No insignia
	พันจ่าเอก Phan cha ek						พันจ่าโท Phan cha tho		พันจ่าตรี Phan cha tri								จ่าเอก Cha ek						จ่าโท Cha tho				จ่าตรี Cha tri								พลทหาร Phon thahan
Anglicised version	Chief Petty Officer First Class						Chief Petty Officer Second Class		Chief Petty Officer Third Class								Petty Officer First Class						Petty Officer Second Class				Petty Officer Third Class								Seaman
Abbreviation[3]	พ.จ.อ. CPO1						พ.จ.ท. CPO2		พ.จ.ต. CPO3								จ.อ. PO1						จ.ท. PO2				จ.ต. PO3								พลฯ -

The rank of "Fleet chief petty officer" (Thai: พันจ่าเอกพิเศษ, romanized: Phan cha ek phiset) is an honorary rank given to senior enlisted members who are deserving of recognition above and beyond that of the highest enlisted rank. There is no difference in the rank insignia worn, and they do not outrank the normal master sergeant 1st class, although in a group situation they will normally be assigned control. They receive a higher salary.

Rank group	Senior NCOs																						Junior NCOs						Enlisted
Royal Thai Air Force[2]																																			No insignia
	พันจ่าอากาศเอก Phan cha akat ek						พันจ่าอากาศโท Phan cha akat tho		พันจ่าอากาศตรี Phan cha akat tri								จ่าอากาศเอก Cha akat ek						จ่าอากาศโท Cha akat tho						จ่าอากาศตรี Cha akat tri						พลทหาร Phon thahan
Anglicised version	Flight Sergeant First Class						Flight Sergeant Second Class		Flight Sergeant Third Class								Sergeant						Corporal						Lance Corporal						Airman
Abbreviation[3]	พ.อ.อ. FS1						พ.อ.ท. FS2		พ.อ.ต. FS3								จ.อ. Sgt.						จ.ท. Cpl.						จ.ต. Lcpl						พลฯ Amn.

The rank of "Special flight sergeant 1st class" (Thai: พันจ่าอากาศเอกพิเศษ, romanized: Phan cha akat ek phiset) is an honorary rank given to senior enlisted members who are deserving of recognition above and beyond that of the highest enlisted rank. There is no difference in the rank insignia worn, and they do not outrank the normal master sergeant 1st class, although in a group situation they will normally be assigned control. They receive a higher salary.