- Thomas Banks won caps for England while at Huddersfield 1931 Wales
- William "Billy" Banks won caps for Wales while at Huddersfield 1949—1953 17-caps, and won caps for Great Britain while at Huddersfield against France (2 matches) (World Cup 1954 Squad 0-caps)
- Joseph "Joe" Berry won caps for Scotland while at Huddersfield Giants, Doncaster, Rochdale Hornets, and Batley Bulldogs 1998—2003 4-caps + 3-caps (sub)
- James "Jim" Bowden won caps for England while at Huddersfield 1953 France, and, and won caps for Great Britain while at Huddersfield 1954 Australia (2 matches), New Zealand
- Leonard "Len" Bowkett won caps for England while at Huddersfield 1932 Wales
- Kenneth "Ken" Bowman won caps for Great Britain while at Huddersfield in 1962 against France, and in 1963 against France and Australia
- xP. J. Brady (#7) won caps for Other Nations while at Huddersfield 1904 England
- Brian Briggs won caps for England while at Huddersfield 1956 France, and, and won caps for Great Britain while at Huddersfield 1954 New Zealand
- Frederick "Fred" Brindle won caps for England while at Huddersfield 1933 Other Nations
- Stan Brogden won caps for England while at Bradford 1929 Other Nations, while at Huddersfield 1932 Wales (2 matches), 1933 Other Nations, Australia, while at Leeds 1935 France, Wales, 1936 Wales (2 matches), France, 1938 Wales, Hull 1938 Wales, 1939 France, 1941 Wales, 1943 Wales, and, and won caps for Great Britain while at Huddersfield 1929– 30 Australia, 1932 Australia (3 matches), New Zealand (3 matches), 1933 Australia (2 matches), while at Leeds 1936 Australia (3 matches), New Zealand (2 matches), 1937 Australia (2 matches)
- Danny Brough Won first cap for England on 5 July 2012 against Exiles whilst at Huddersfield
- John "Jack" Chilcott won caps for Wales while at Huddersfield 1913—1914 2-caps, and won caps for Great Britain while at Huddersfield circa-1914
- Douglas "Doug/Dougie/Duggy" Clark won caps for England while at Huddersfield 1912 Wales, 1913 Wales, 1914 Wales, 1921 Wales, Other Nations, 1925 Wales, and, and won caps for Great Britain while at Huddersfield 1911–12 Australia (2 matches), 1914 Australia (3 matches), 1920 Australia (3 matches), New Zealand (3 matches)
- Gavin Clinch won international caps for Ireland while at Huddersfield-Sheffield Giants, and Halifax 2000—2001 1-cap + 1-cap (sub)
- Donald "Don" Close won a cap for Great Britain while at Huddersfield in 1967 against France
- Lionel Cooper won caps for Other Nations while at Huddersfield circa-1951 ?-caps
- Eorl Crabtree won caps for England while at Huddersfield 2004 Russia (sub), France (sub), Ireland, 2005 France, New Zealand, 2006 France, Tonga (2 matches), Samoa (sub)
- Richard "Dick" Cracknell won caps for England while at Huddersfield 1951 France, 1952 Other Nations, 1953 France, Wales, while at Oldham 1953 France, and, and won caps for Great Britain while at Huddersfield 1951 New Zealand (2 matches)
- Alban Davies won caps for Wales while at Huddersfield 1943—1946 2-caps
- James "Jim" Davies won caps for Wales while at Huddersfield 1909—1912 3-caps, and won caps for Great Britain while at Huddersfield in 1911 against Australia, and in 1912 against Australia
- William "Bill" T. Davies won caps for Wales while at Huddersfield 1943—1947 6-caps
- Pat Devery (#4) won caps for Other Nations while at Huddersfield circa-1951 11-caps
- Frank Dyson won a cap for Great Britain while at Huddersfield 1959 New Zealand
- John "Jack" Dyson won caps for England (RU) while at Huddersfield in 1890 against Scotland, in 1892 against Scotland, and in 1893 against Ireland and Scotland
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- David Morgan Evans won caps for Wales while at Huddersfield 1936 2-caps
- Samuel "Sam" Gee won caps for England while at Huddersfield 1930 Other Nations
- Thomas "Tommy" Grey won caps for Wales while at Huddersfield 1911—1912 3-caps
- William "Bill" Griffin won a cap for Wales while at Huddersfield in 1952
- Benjamin "Ben" Gronow for Wales RU while at Bridgend RFC? (RU) 1910 4-caps, and won caps for Great Britain while at Huddersfield 1911—20 7-caps
- Cyril Halliday won caps for England while at Huddersfield 1931 Wales
- Neil Harmon won caps for Ireland while at Huddersfield Giants, Bradford Bulls, and Salford City Reds 1997—2001 5-caps + 1-cap (sub)
- Peter Henderson New Zealand won caps for Other Nations while at Huddersfield circa-1951 ?-caps
- Percy Holroyd won caps for England while at Huddersfield 1909 Australia
- Emrys Hughes won caps for Wales while at Huddersfield in 1938 against England, and in 1939 against France
- Johnny Hunter (Testimonial match 1955) (#1) won caps for Other Nations while at Huddersfield circa-1951 ?-caps
- Henry "Harry" Huth won a cap for England (RU) while at Huddersfield in 1879 against Scotland
- William "Bill" Johnson won a cap for Wales while at Huddersfield 1938 1-cap
- Stuart Jones won caps for England while at Huddersfield 2004 Russia (sub)
- Alex Kersey-Brown won caps for Wales while at Huddersfield 1968—1969 2-caps
- William Kitchin won caps for England while at Huddersfield 1911 Wales, Australia
- Fred Longstaff won caps for England while at Huddersfield 1914 Wales, and won caps for Great Britain while at Huddersfield 1914 Australia, New Zealand
- Kenneth "Ken" Loxton won a cap for Great Britain while at Huddersfield in 1971 against New Zealand
- Dennis Madden won caps for Wales while at Acton & Willesden, Huddersfield and Leeds 7-caps 1935—1939
- Lee Milner won a cap for Scotland while at Huddersfield Giants in the 26–6 victory over Ireland at Firhill Stadium, Glasgow on 7 August 1996
- Stan Moorhouse won caps for England while at Huddersfield 1912 Wales, 1913 Wales, 1914 Wales, and won caps for Great Britain while at Huddersfield 1914 Australia, New Zealand
- Glyn Morgan won caps for Wales while at Huddersfield, and Cardiff 1947—1949 4-caps
- Stanley "Stan" Mountain won caps for Wales while at Huddersfield 1935 1-cap
- Jonathon "Jon" Neill won caps for Scotland while at Huddersfield Giants 1997—1999 2-caps
- Bob Nicholson won caps for England while at Huddersfield 1945 Wales, 1946 France, 1947 Wales, 1948 France, 1949 Wales, France, and won caps for Great Britain while at Huddersfield 1946 New Zealand, 1948 Australia (2 matches)
- Hefin O'Hare won caps for Wales while at Leeds, and Huddersfield 2000—2004 7(8?)-caps + 1-cap (sub) 2-tries 8-points
- Chris Orr won caps for Scotland while at Huddersfield Giants 1998 2-caps
- Ike Owens won caps for Wales while at Leeds, Castleford and Huddersfield 1945—1949 12-caps, and won caps for Great Britain while at Leeds in 1946 against Australia (3 matches), and New Zealand
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- G. Parker won caps for Wales while at Huddersfield 1928—1935 4-caps
- Russell Pepperell won caps for England while at Huddersfield 1947 France, Wales, 1948 Wales, 1949 France
- Stanley "Stan" Pepperell won caps for England while at Huddersfield 1936 Wales, 1937 France, 1944 Wales
- Bryn Phillips won a cap for Wales while at Huddersfield 1926 1-cap
- James "Jim" Regan won a cap for Wales while at Huddersfield 1939 1-cap
- Paul Reilly won caps for England while at Huddersfield 2004 France (sub), Ireland
- Rob Roberts won caps for Wales while at Huddersfield, unattached, Leigh, and Oldham 2002—present 6(7, 8?)-caps + 2-caps (sub) 2-tries 8-points
- John "Johnny" Rogers won caps for Wales while at Huddersfield 1914—1922 3-caps, and won caps for Great Britain while at Huddersfield in 1914 against Australia, in 1920 against Australia (3 matches), in 1921 against Australia (2 matches), and in 1922 against Australia
- Albert Rosenfeld won caps for Australia while at Eastern Suburbs 1908 New Zealand (3 matches), while at Huddersfield 1909 Was It Against England Or Great Britain?
- Peter Rowe won caps for Wales while at Wigan, Blackpool Borough, and Huddersfield 1969—1979 7-caps + 3-caps (sub), including while at Blackpool Borough in the 1975 Rugby League World Cup against Australia, England, and Australia.
- Danny Russell won caps for Scotland while at Carlisle, and Huddersfield 1996—2000 9-caps
- Thomas "Tom"/"Tommy" Scourfield won a cap for Wales while at Huddersfield 1935 1-cap
- Kenneth "Ken" Senior won caps for Great Britain while at Huddersfield in 1965 against New Zealand, and in 1967 against France
- Darrall Shelford won caps for Scotland while at Huddersfield 1996 5-caps
- Michael "Mick" Slicker won caps for Ireland while at Huddersfield Giants 2001—2003 2-caps + 1-cap (sub)
- Thomas "Tommy" Smales won caps for England while at Huddersfield 1962 France, while Unattached (The only player to ever win England cap while Unattached) 1975 Papua New Guinea (sub), and won caps for Great Britain while at Huddersfield 1962 France, 1963 France, Australia, 1964 France (2 matches), while at Bradford 1965 New Zealand (3 matches)
- J. William "Willie" Stocks won caps for England while at Huddersfield 1930 Other Nations
- Michael "Mick" Sullivan (#5) won caps for England while at Huddersfield 1955 Other Nations, 1956 France, while at St Helens 1962 France, and won caps for Great Britain while at Huddersfield 1954 France (2 matches), New Zealand, Australia, 1955 New Zealand (3 matches), 1956 Australia (3 matches), 1957 France (3 matches), France, Australia, New Zealand, while at Wigan France (2 matches), 1958 France, Australia (3 matches), New Zealand (2 matches), 1959 France (2 matches), Australia (3 matches), 1960 France (3 matches), France, New Zealand, Australia, while at St Helens 1961 France, New Zealand (2 matches), 1962 France (3 matches), Australia (3 matches), New Zealand, while at York 1963 Australia (World Cup 1954 3-caps, 1-try, 1957 3-caps, 3-tries, 1960 3-caps, 1-try)
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- Frederick "Fred" Talbot won a cap for Wales while at Huddersfield 1935 1-cap
- W. Gwyn Thomas won caps for Wales Wigan, and Huddersfield 1914—1921 2-caps, and won caps for Great Britain while at Wigan in 1914 against Australia, while at Huddersfield in 1920 against Australia (3 matches), and New Zealand (2 matches), in 1921 against Australia (2 matches), and in 1922 against Australia
- Christopher "Chris" Thorman won caps for England while at Huddersfield 2005 France, New Zealand
- Idris Towill won a cap for Wales while at Huddersfield 1932 1-cap
- Dave Valentine won caps for Great Britain while at Huddersfield 15-caps (World Cup 1954 Captain 4-caps) won caps for Scotland (RU) while at Hawick RFC (RU) 1947 2-caps won caps for Other Nations while at Huddersfield circa-1951 16-caps (signed for Huddersfield 1947–48)
- Rob Valentine won caps for Great Britain (RL) while at Huddersfield 1967 Australia 1-cap won caps for Scotland (RU) while at Hawick RFC (RU)1963 3-caps won caps for Other Nations while at Keighley 1975 Lancashire (1 or 2)-caps (signed for Huddersfield 11/1963)
- Harold Wagstaff won caps for England while at Huddersfield 1909 Australia, 1910 Wales, 1911 Wales, Australia, 1912 Wales, 1913 Wales, 1914 Wales, 1921 Other Nations, 1923 Wales, and won caps for Great Britain while at Huddersfield 1911–12 Australia (2 matches), 1914 Australia (3 matches), New Zealand, 1920 Australia (2 matches), New Zealand (2 matches), 1921–22 Australia (2 matches)
- Stephen Wild won caps for England while at Wigan 2005 New Zealand, and won caps for Great Britain while at Wigan 2004 Australia (sub), while at Huddersfield 2007 France
- Edwin "Eddie" Williams won a cap for Wales while at Huddersfield 1928 1-cap
- Ernest "Ernie" Woodhead won a cap for England (RU) while at Huddersfield in 1880 against Ireland
- Harold Young won caps for England while at Bradford 1928 Wales, while at Huddersfield 1929 Other Nations, 1930 Other Nations, 1931 Wales, and won caps for Great Britain while at Huddersfield 1929–30 Australia
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