想帶印尼女傭到星加坡旅遊，她是否要簽證?

No need，Details for require visa Foreigners as below:

Foreigners holding travel documents issued by the following countries will require a visa to enter Singapore:

Afghanistan
Algeria
Bangladesh (Except Diplomatic/Official passport holders)
Commonwealth of Independent States* (Except Diplomatic/Official/Service passport holders for a stay of up to 30 days )
Armenia
Azerbaijan
Belarus
Georgia
Kazakhstan
Kyrgyzstan
Moldova
Russia
Tajikistan
Turkmenistan
Ukraine
Uzbekistan
Egypt
India (Except Diplomatic/Official passport holders)
Iran
Iraq
Jordan (Except Diplomatic/Official passport holders)
Lebanon
Libya
Morocco
Myanmar (Except Diplomatic/Official passport holders)
People's Republic of China (Except Diplomatic/Service/Public Affairs passport holders for a stay of up to 30 days)
Pakistan
Saudi Arabia (Except Diplomatic passport holders)
Somalia
Sudan
Syria
Tunisia (Except Diplomatic/Official passport holders)
Yemen

Indonesian passport holder doesn't require visa to Singapore, because they are part of the ASEAN (association of southeast asian nations)