The Securities and Exchange Commission has not necessarily reviewed the information in this filing and has not determined if it is accurate and complete.
The reader should not assume that the information is accurate and complete.

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
FORM 13F

FORM 13F COVER PAGE

OMB APPROVAL
OMB Number: 3235-0006
Estimated average burden
hours per response: 23.8

Report for the Calendar Year or Quarter Ended: 03-31-2019
Check here if Amendment    Amendment Number:
This Amendment (Check only one.):    is a restatement.
   adds new holdings entries.
Institutional Investment Manager Filing this Report:
Name: TIFF ADVISORY SERVICES INC
Address: 170 N. Radnor Chester Road
Suite 300
Radnor, PA  19087
Form 13F File Number: 028-11995

The institutional investment manager filing this report and the person by whom it is signed hereby represent that the person signing the report is authorized to submit it, that all information contained herein is true, correct and complete, and that it is understood that all required items, statements, schedules, lists, and tables, are considered integral parts of this form.

Person Signing this Report on Behalf of Reporting Manager:
Name: Christian A. Szautner
Title: Chief Compliance Officer, TIFF Advisory Services, Inc.
Phone: 610-684-8017
Signature, Place, and Date of Signing:
/s/ Christian A. Szautner RadnorPA 05-10-2019
[Signature] [City, State] [Date]
Report Type (Check only one.):
   13F HOLDINGS REPORT. (Check here if all holdings of this reporting manager are reported in this report.)
   13F NOTICE. (Check here if no holdings reported are in this report, and all holdings are reported by other reporting manager(s).)
X 13F COMBINATION REPORT. (Check here if a portion of the holdings for this reporting manager are reported in this report and a portion are reported by other reporting manager(s).)
List of Other Managers Reporting for this Manager:
[If there are no entries in this list, omit this section.]
Form 13F File Number Name
028-05508 AJO, LP
028-16225 LANSDOWNE PARTNERS (UK) LLP
028-15794 Kopernik Global Investors, LLC
028-17007 Hosking Partners LLP
028-15226 Fundsmith LLP
028-13681 TB Alternative Assets Ltd.
028-10120 AQR CAPITAL MANAGEMENT LLC
028-19192 Deep Basin Capital LP
028-19492 Strategy Capital LLC
Form 13F Summary Page
Report Summary:
Number of Other Included Managers: 0
Form 13F Information Table Entry Total: 13
Form 13F Information Table Value Total: 253,913
(thousands)
List of Other Included Managers:
Provide a numbered list of the name(s) and Form 13F file number(s) of all institutional investment managers with respect to which this report is filed, other than the manager filing this report.
[If there are no entries in this list, state “NONE” and omit the column headings and list entries.]
NONE