Yamaha TZ125

{{Infobox Motorcycle

| name = Yamaha TZ 125

| image = File:Yamaha TZ125.jpg

| manufacturer = Yamaha

| production = 1980-2010

| engine = 125 cc, 1-cylinder, 2-stroke

|bore_stroke =

| power = {{convert|44|bhp|abbr=on}} @ 12,250 rpm

| torque =

|top_speed =

| transmission = 6-speed

| suspension =

| brakes =

| tires = 18"

| rake_trail =

| wheelbase =

| length= {{convert|1790|mm|in||abbr=on}}

| width= {{convert|520|mm|in||abbr=on}}

| dry_weight = 72 kg

| fuel_capacity =

| class = Grand Prix motorcycle racing

}}

The Yamaha TZ 125 was a racing motorcycle produced by the Yamaha Motor Company from 1980 to 2010. The motorcycle was powered by a two stroke 125 cc engine.

The first water cooled two stroke 125cc roadracer from Yamaha was released late in 1979 in the shape of the TZ 125G.{{cite web|url=http://www.gpmotorbikes.com/index.php/en/parent-classic/yamaha-tz125-detail|title=Classic : YAMAHA TZ125|website=Gpmotorbikes.com|access-date=2 January 2019}}

Japanese rider Yoshiaki Katoh became All Japan Road Race champion in 1993 on a Yamaha TZ125.{{cite web|url=https://global.yamaha-motor.com/showroom/cp/collection/racing_tz125/index.html|title=1994 TZ125 - Communication Plaza - Yamaha Motor Co., Ltd.|website=Global.yamaha-motor.com|access-date=2 January 2019}}{{cite web|url=https://global.yamaha-motor.com/race/wgp-50th/race_archive/season1990_99/1994/index.html|title=1994 - race - Yamaha Motor Co., Ltd.|website=Global.yamaha-motor.com|access-date=2 January 2019}}{{cite web|url=https://www.motoracing-japan.com/result/jrr/r1993_ps.html|title=Moto Racing JAPAN : MFJ Road Race Point Standings 1993|website=Motoracing-japan.com|access-date=2 January 2019}}