List of high speed train manufacturers

None of the photos below are mine.
Bombardier Transportation: made the Bombardier Zefiro, from Canada, bought by Alstom, includes Adtranz

Alstom, makes the TGV and AGV trains, from France

• The TGV:

• The AGV

Siemens Mobility, makes the Siemens Velaro, from Germany

Nippon Sharyo, makes Shinkansen trains, from Japan

J-TREC, makes Shinkansen trains, from Japan

Kinki Sharyo, makes Shinkansen trains, from Japan 

Kawasaki Heavy Industries, makes Shinkansen trains, from Japan

Hitachi, makes Shinkansen trains, from Japan (Includes Hitachi Rail Italy, AnsaldoBreda)

• The N700 series shinkansen:

• The 500 series shinkansen (this one's hello kitty themed)

• The E7 series shinkansen:

• The E5 series shinkansen:

The E5 alongside the E2 series shinkansen

From left to right: E3 series, E3-2000 series , E1 series, 200 series, E6 series, E5 series, E4 series

• The ALFA-X:

Mitsubishi Heavy Industries, made part of the first SCMAGLEV L0 Shinkansen trains alongside Nippon Sharyo, from Japan, stopped due to financial difficulties

Toshiba, made trains for Taiwan under the Shinkansen consortium, from Japan

CRRC, makes the Fuxing Hao, from China

Hyundai Rotem, made the HEMU-430X, KTX-sancheon KTX-II, and the KTX-I, from South Korea

• KTX-II:

• The HEMU-430X:

Talgo, makes the Talgo 350 for renfe and for saudi arabia's high speed rail, from Spain

CAF, makes the CAF Oaris, from Spain

Stadler, makes the Stadler Smile, from Switzerland

Not so high speed (Higher-speed rail, 130-250km/h):
For a railway or rail line to be considered high speed, it must have a maximum speed of 200km/h for retrofitted lines or railways or 250km/h for new lines or railways.

Taiwan Rolling Stock Company, from Taiwan
Integral Coach Factory, made the Vande Bharat Express, from India