His father was named Baharuddin Yoesoef (1885–1929) and his mother, Siti Mariam (1892–1935). Alamsjah was the youngest of nine children; brothers' names are Bermawi Ahmad, Siti Arbaeen, Siti Hafsyah, Siti Amenah, Mohammad Adenan, Siti Rohaya, Mohammad Sirod and Marsiyem. On 12 January 1952, Alamsjah married Siti Maemunah Alamsjah, who was born in
Palembang on 15 April 1930. The couple had five children, namely Joesoef Haery Utama Alamsjah, Muhammad Ali Muda Eddy Alamsjah, Muhammad Soleh Bingsiwijaya Alamsjah, Siti Mariam Alamsjah, and Siti Hafsah Alamsjah. Of his children, and his wife obtained Alamsjah 12 grandchildren. One of them was Abdul Sattar who was born on (30 September 1984) of the pair Siti Mariam and Dr. Merry Alamsjah Abadi Soetisna, MSI. Several grandchildren Alamsjah the other of which is Amot Syamsuri Muda, who later was named small Amot (25 April 1987) were born to Atty Alamsjah and Ir. Agus Bakhtiar and Ahmad Shukri (3 November 1988) of Muhammad Soleh Bingsiwijaya Alamsjah and Ginna. Alamsjah's second son (Muhammad Ali Muda Eddy Alamsjah) and his wife (Hartanti Yuniari Soeharto) gave him two grandchildren, they are named Siti Fatimah Hapsari Ayuningdyah Ariswari Alamsjah and Muhamad Yusuf Baharuddin Satria Muda Alamsjah. The eldest grandson of the couple's son Joesoef Haery Utama Alamsjah, M.Arch and Ir. Dewi Arimbi Soeharto who is the daughter of dr. H.Soeharto & Sprott Tedjasukmana Suharto, Siti Maimunah is Jibrilia, Abdullah M. Abi Alamsjah, Siti Khadijah Mikhailia Tikha Alamsjah, Abdurahman M. Dumas, and M. Abdurahim Khairy Alamsjah. Alamsjah eldest son also followed his father's footsteps in service to the country as the people's representatives in the DPR / MPR since 1992 and had served on the DPP Golkar and ICMI Center. ==Honour==