Youtube Sans  Suggested by jerseygirl 
YouTube Gothic  Suggested by Marcomahone123 
Alternate Gothic No. 2  Suggested by esteban15 
YouTube New Bold  Suggested by PePendejo émd 
TubeFont  Suggested by PePendejo émd 
Oswald  Suggested by LeoBloxyDonut 
Acumin Extra Condensed Black  Suggested by DreamIsland 
Roboto  Suggested by tvongsaly4592 
Lorimer No 2 Condensed  Suggested by ellouder2OMG 
Akzidenz-Grotesk Bold Condensed  Suggested by Juancito1198 
League Gothic  Suggested by LeoBloxyDonut 
Trade Gothic  Suggested by flopperyt8 

Font Similar... to letter "YouTube"

http://www.itsnicethat.com/news/youtube-sans-typeface-by-saffron-190517

Exactly letters?

...........OKAY NOW WHAT DOES THAT HAVE TO DO WITH THE LOGO? https://cdn.discordapp.com/attachments/361650949074190337/394581062954516490/image.jpg

Yeah... Because actually YouTube Sans doesnt look like the actual font.

https://www.itsnicethat.com/system/files/052017/591ec04d7fa44c885900000c/images_slice_large/YouTube-Sans_10.jpg

See? This image from Its Nice That shows that the 'YouTube' text isnt correct.

From what i can say. Its actually Alternative Gothic but with different 'u's and 'd's

Found some useful info about the logo’s font and its development in a The Verge article.

The original article is here if anyone wants to read the whole thing: www.theverge.com/platform/amp/2017/8/29/16216868/new-youtube-logo-redesign-font-color-app-design


INFORMATION I FOUND USEFUL FOR THE LOGOTYPE:

“The old logo has a typeface from 1903, alternate gothic number two, and it’s been manually tweaked, so there are weird design nerd things that are off. The U in Tube is not the same as the U in You, so if you take them and overlay they don’t exactly line up,”

They decided to ditch the original typeface and design one of their own. They experimented with fonts based on styles from classic television and the VHS era as well as more modern looks. In the end, they went with something that retained the essence of print. “We wanted to keep the history, and the tension of a media typeface that was made in 1903 to be typeset manually with a digital platform that reaches farther than any newspaper of the time could ever conceive of.”

Feel free to check the full article’s link at the top of this comment if you think there’s something I might’ve missed. Thanks. =)

A font by Westral

Its not youtube sans anymore

Have a Youtube from WestralInc, but I also agree with PePendejo émd, so that's why I giving you a download link.

Lorimer No 2 Condensed SemiBold is the closest font.

I Think Trade Gothic LT Std Bold