Eugene

Also Korean (Expatriate).
It is used by Koreans living abroad as a Romanized form of 유진, which is usually transcribed as Yu-Jin or Yoo-Jin (source: https://en.m.wikipedia.org/wiki/Yu-jin).

Diminutives should include Geno as a de facto nickname.

In 2018, 63 is the most common age for an American (U.S.) Eugene who is registered male with the Social Security Administration. It is the 239th most common male first name for living U.S. citizens.

The name Eugene was given to 298 boys born in the US in 2016.
99.14 percent of people with the first name Eugene are male.

The equivalent in Latvian is Eižens e.g. Latvian architect Eižens Laube https://en.wikipedia.org/wiki/Ei%C5%BEens_Laube [noted -ed]

Eugene is a very common name in Korea. And the funny thing is, here we regard 'Eugene' as a girl's name. It's totally girly! If you see a male have this name, we get a awkward feeling like as if a boy have a name like 'Lily' or 'Olivia'. And like I said in the beginning, it's a very common name so you can see this name often. I also have lots of friends who's name is Eugene like Eugene Han, Eugene Bak, Eugene Jo, Eugene Jeon... and so on. They're all girls, of course. :) Although it's common, I liked this name very much cause It sounds pretty.
And one day I saw 'Tangled' and I find it so cool that Flynn Rider's real name is Eugene! I was quite surprised that foreign countries use a name 'Eugene' too (I've never been abroad) and at the fact the name suits a man very well. So I searched the name, and that brought me here. It's still interesting to know western countries use this name for boys though.