Brock William Motum (born 16 October 1990) is an Australian professional basketball player for Shiga Lakes of the Japanese B.League.

On 27 July 2013, he signed a two-year deal with Granarolo Bologna of the Lega Basket Serie A, with an NBA out-clause for 2014.

After averaging 8.0 points and 4.6 rebounds over five Summer League games for the Utah Jazz,[4][5] Motum signed a non-guaranteed contract with the franchise on 26 August 2014.

[9] Backing up 7'1" (216 cm) Luke Schenscher at centre in his debut game on 9 November, Motum recorded 28 points and 6 rebounds in the 36ers' 100-107 loss to the Sydney Kings.

During this time with Schenscher restricted by an ankle injury, Motum moved to the starting lineup at power forward and 6'11" (212 cm) Daniel Johnson (who rejoined the club late in the season after a stint in Poland) playing at centre, with the two forming a formidable front court combination.

[16] On 4 August 2015, Motum signed a one-year deal, with the option of a second, with Žalgiris Kaunas of the Lithuanian Basketball League.

[24] Motum first represented Australia in the 2009 FIBA Under-19 World Championship in Auckland, New Zealand, helping the team to a 7–2 record and a fourth-place finish.