The Mark Six lottery is a lottery game conducted by HKJC Lotteries Limited using the facilities of The Hong Kong Jockey Club. Since its inception in 1975, the Mark Six has contributed over HK$24.0 billion to the Hong Kong SAR Government Treasury and the Lotteries Fund, being a fund that supports charitable causes in Hong Kong. Over the past 28 years, the total contribution to Government lottery duty has exceeded HK$16.6 billion and over HK$7.4 billion has been contributed to the Lotteries Fund.