Non-US Citizens: Get your Singapore Business visa with the TDS Washington DC Office

Please send TDS your current valid and signed passport. It must not expire within 6 months of your last day in Singapore and must have at least one blank visa page. Foreign Embassies cannot issue a visa on a page not labeled as a Visa page. Amendment and Endorsement pages in the back of the passport cannot be used for issuance of a visa.
A visa cannot be stamped on a page even if only one Small Stamp is on the visa page. If your passport expires within 6 months, you must renew your passport and then we will secure your visa with the new passport.

Also send two photocopies of Passport (from Page 1 to passport validity date, including the US visa page

Please send 2 recent professional passport-type photographs.
Digital and non-passport photographs are not acceptable.
Passport Photo Guide - Click Here

A Photocopy of Permanent Resident Card (Green Card) or valid U.S. visa and I-94 is required.
Travelers who entered the USA after April 26th 2013 should print the electronic I-94 form from the
Department of Homeland Security.

If you are returning to USA after visiting Singapore, please produce a valid US visa or the relevant documentary proof confirming your returnability such as INS Parole Paper, etc.;

A photocopy of confirmed onward air ticket or flight itinerary. A valid visa to the next destination should be obtained (if applicable).
The Embassy does not recommend purchasing your ticket prior to a visa being issued.

A business letter of responsibility is required if you are traveling for business purposes , to be typewritten on your company letterhead and addressed to:
Embassy of Singapore, Visa Section, Washington DC
The letter must explain all of the following:
Nature of business to be performed
Name and address of reference to be visited
This letter should request Multiple Entries visa if required
Guarantee of return transportation and sufficient funds for the visit
The letter should be signed by an officer of the company other than the applicant.

And

Letter of Invitation from a Singapore registered company is required. (Letters of Invitation from US companies are not acceptable.)

Separate instructions apply if you are Bangladesh, Chinese, Indian, Myanmar, Russian or CIS countries passport holders.

Indian Citizens: Please provide a letter confirming the need for a Single, Double or Multiple entry visa. Also provide a day time phone number.
Bangladesh Citizens: Please provide a letter confirming the need for a Single, Double or Multiple entry visa. Also provide a day time phone number.
Chinese Citizens: Please provide a letter confirming the need for a Single, Double or Multiple entry visa. Also provide a day time phone number.
Myanmar Citizens: Please provide a letter confirming the need for a Single, Double or Multiple entry visa. Also provide a day time phone number.
Russian Citizens: Please provide a letter confirming the need for a Single, Double or Multiple entry visa. Also provide a day time phone number.
CIS Countries: Please provide a letter confirming the need for a Single, Double or Multiple entry visa. Also provide a day time phone number.

Please Send Two Completed and Signed Application Forms.