<DOCUMENT>
<TYPE>13F-NT
<SEQUENCE>1
<FILENAME>t71946d_13f-nt.txt
<DESCRIPTION>FORM 13F
<TEXT>

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                                 UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                              Washington, DC 20549

                                    FORM 13F

                              Form 13F COVER PAGE
            Report for the Calendar Year or Quarter Ended: 9/30/2011
                                                          ----------
            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:     DISCOVERY GROUP I, LLC
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Address:  191 NORTH WACKER DRIVE, CHICAGO, ILLINOIS 60606
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Form 13F File Number 28-     11637
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               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:     Meghan O'Callaghan
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Title:    Associate
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Phone:    312-265-9600
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Signature, Place, and Date of Signing:
/s/ Meghan O'Callaghan
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(Signature)
Chicago, Illinois
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(City, State)
11/14/2011
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(Date)

Report Type (Check only one):

[ ]  13F HOLDINGS REPORT. (Check here if all holdings of this reporting
     manager are reported in this report.)

[X]  13F NOTICE. (Check here if no holdings reported are in this report, and all
     holdings are reported by other reporting manager(s).)

[ ]  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.
Form 13F File Number         Name
28-11638                     MICHAEL R. MURPHY
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