Alternate Reality(split 2233)
The following is a list of unnamed languages.
Caretaker's epitaph language Edit
This language, along with the English language, was inscribed on the Caretaker's epitaph. (TAS: "Once Upon a Planet")
Enterprise-D nursery alphabet Edit
This alphabet, along with the English alphabet, graced the wall of the USS Enterprise-D nursery in 2365. (TNG: "The Child")
Flaherty's languages Edit
These languages', along with Romulan, Klingon, Giamon and Stroyerian, were spoken by Commander Flaherty as of sometime prior to 2365, according to Jean-Luc Picard. He mentioned it to William T. Riker that year when Riker inquired about the first officer of the USS Aries following his (ultimately rejected) appointment as the Ariess captain. (TNG: "The Icarus Factor")
As these languages also presumably include English, that would mean the unnamed languages numbered 35.
Manas' language Edit
Manas' language was an alien language used by Manas, in conversation with Krall.
In 2263 of the alternate reality, the fact that Nyota Uhura had only heard Krall use this language was responsible for her considerable surprise when he started to speak English to her. (Star Trek Beyond)
Nekrit supply station Edit
The script of an unidentified language was found on board Bahrat's supply depot in the Nekrit Expanse in the Delta Quadrant in 2373. (VOY: "Fair Trade")
Nezu planet writingEdit
Equipment with writing on it was present in a cavern at the base of an orbital tether on a Nezu-controled planet. (VOY: "Rise")