Appendix:Terminology differences between Indonesian and Standard Malay (O)

Main article: Appendix:Indonesian–Standard Malay relations

English	Topics	Translation in Indonesian	Translation in Standard Malay	Notes
objective (goal)		sasaran	objektif
observation		obsèrvasi, pêngamatan	pemerhatian
observation ward	healthcare	bangsal obsèrvasi	wad pemerhatian
observer		pêngamat	pemerhati
odds ratio	statistics	rasio peluang, nisbah peluang, rasio kemungkinan	nisbah ganjil
offender	law	pêlanggar	pesalah
office		kantor	pejabat
official, office holder	government	pêjabat, pimpinan	teraju
opacity	optics	opasitas	kelegapan
opposition	politics	oposisi	pembangkang
oration	communication	orasi	pengucapan
Organisation of Islamic Cooperation (OIC)	politics	Organisasi Kerjasama Islam	Pertubuhan Kerjasama Islam
orientation		orientasi	haluan; kedudukan arah; orientasi; penghalaan; pengkiblatan; suai kenal
orphanage		panti asuhan	rumah anak yatim
otter	zoologi	berang-berang	memerang
oven	cuisine	ovên	ketuhar
overdraft (banking)	business	cerukan	overdraf
overlapping		tumpang tindih	pertindanan, pertindihan
overtake (verb)	civil engineering	mendahului	memotong
overview		tinjauan	gambaran keseluruhan
ovulation	physiology	ovulasi	pengovulan
own goal (goal scored by player against their own team)	sport	gol bunuh diri	gol sendiri
oxidation	chemistry	oksidasi	pengoksidaan
oxidative phosphorylation	biochemistry	fosforilasi oksidatif	pemfosfatan oksidatif