Junior Welterweight World/Lineal Champions (140lbs)

Tony Canzoneri (10/9/1931 – 18/1/1932

Canzoneri (1) beat Jack Kid Berg (2)

Johnny Jadick (18/1/1932 – 20/2/1933)

Battling Shaw (20/2/1933 – 21/5/1933)

Tony Canzoneri (21/5/1933 – 23/6/1933)

Barney Ross (23/6/1933 – 15/4/1935)

Ross moved up in weight

Carlos Ortiz (12/6/1959 – 1/9/1960)

Ortiz beat Kenny Lane to unify the NY/NBA titles
Duilio Loi (1/9/1960 – 14/9/1962)
Eddie Perkins (14/9/1962 – 15/12/1962)
Duilio Loi (15/12/1962 – 24/1/1963)
Loi retired
Eddie Perkins (1/1/1965 – 18/1/1965)

Perkins, the WBA champion, was recognised by the WBC

Carlos Hernandez (18/1/1965 – 29/4/1966)

Sandro Lopopolo (29/4/1966 – 30/4/1967)
Paul Fujii (30/4/1967 – 12/12/1968)
Nicolino Locche (12/12/1968 – 10/3/1972)
Alfonso Frazer (10/3/1972 – 28/10/1972)
Antonio Cervantes (28/10/1972 – 6/3/1976)
Wilfred Benitez (6/3/1976 – 25/8/1978)

Benitez moved up in weight
Antonio Cervantes (18/1/1979 – 2/8/1980)

Cervantes beat Miguel Montilla to unify NY/WBA titles
Aaron Pryor (2/8/1980 – 31/12/1985)
Pryor moved up in weight
Julio Cesar Chavez (17/3/1990 – 29/1/1994)

Chavez (1) beat Meldrick Taylor (2)
Frankie Randall (29/1/1994 – 7/5/1994)
Julio Cesar Chavez (7/5/1994 – 7/6/1996)
Oscar De La Hoya (7/6/1996 – 12/4/1997)

De La Hoya moved up in weight
Kostya Tszyu (3/2/2001 – 4/6/2005)

Tszyu (1) beat Sharmba Mitchell (3)
Ricky Hatton (4/6/2005 – 2/5/2009)
Manny Pacquiao (2/5/2009 – 26/7/2010)

Pacquiao moved up in weight
Devon Alexander (26/7/2010 – 29/1/2011)

Alexander had earlier unified the IBF/WBC titles
Timothy Bradley (29/1/2011 – 27/6/2012)
Bradley moved up in weight
Danny Garcia (14/7/2012 – 11/9/2015)

Garcia beat Amir Khan to unify the WBA/WBC titles
Garcia moved up in weight
Terence Crawford (23/7/2016 – 29/1/2018)

Crawford (2) beat Viktor Postol (1)

Crawford moved up in weight
Regis Prograis (27/4/2019 – 26/10/2019)

Prograis (1) beat Kiryl Relikh (4)

Josh Taylor (26/10/2019  –