Inglis Ivan Irwin Levers Littlewood (20 October, 1902 – 26 July, 1951) was a rugby league player who represented New Zealand for the first time in 1925.

Ivan was the second youngest of twelve children with 8 older sisters; Mary Esther May, Ruby Ethel Wardlow, Laura Mabel Hamilton, Ivy Eleanor Muriel, Alice Eliza Pearl, Gladys Evelyn Elsie, Eileen Frances, and Bertha Margaret, a younger sister; Ada Dorothy Winifred, and two older brothers; Frederick Henry Carlton, and Albert.

The first record of him playing was for the Lower Waikato representative side against the touring Australian team on 18 September 1919.

The South Auckland team were well beaten by 49 points to 10 in front of 7,000 spectators at Steele Park in Hamilton.

[6] He initially played in the Maritime 2nd grade side for the 2nd and 3rd rounds before making his senior debut on 14 May against Newton Rangers where he scored a try in a 12–10 win.

[9] For Ponsonby he scored a remarkable 8 tries in just 3 matches, including 5 in the Roope Rooster semi final against Newton Rangers giving him 13 total for the season (again the second highest try scorer in Auckland rugby league).

[10] This form saw Littlewood again selected for the Auckland team where he played 4 matches against New Zealand Māori on 20 May which was lost 18–28 in front of 7,000 spectators at Carlaw Park.

[15] He played New South Wales 2 days later for a King Country XIII which was made up of players from far and wide.

[20] Littlewood then switched codes along with other players from his Taupiri team and finished the season playing for the Marist rugby club for 3 matches.

[21] In the same year (1923) Littlewood returned to his former Ponsonby United side in Auckland for the Roope Rooster matches.

He was selected to play on the wing in a back line which featured Charles Gregory, Jack Kirwan, Jim Sanders, Frank Delgrosso, Maurice Wetherill, and Stan Webb.

Unfortunately Littlewood had a game to forget, being involved in 2 errors leading to tries for the visitors which saw the Queensland side run out to a 35–17 win at Carlaw Park before 15,000 spectators.

In 13 games for Ellerslie, Littlewood scored 5 tries including one in the promotion-relegation match against Grafton which they won 11–3 to gain promotion.

Though they were competitive in most matches and they did gain wins over Ponsonby United, City Rovers, and Marist Old Boys.

The following year saw Littlewood play 6 further matches for Ellerslie which were all lost before switching codes to join the City rugby club in Auckland.

[35] He was joining former Kiwi legend Karl Ifwersen at the City club and played 8 matches scoring twice.

His move was not without controversy as 'code hopping' had caused frustration among officials of both codes and Bill Davidson complained that Littlewood had "turned over for the fourth time, and this sort of thing should be stopped".