Caption and To line
The United States District Court and district, the title Subpoena to Testify Before a Grand Jury, and the name of the person the subpoena is addressed to.
AO 110
Subpoena to Testify Before Grand Jury
- Agency
- U.S. Courts
- Revision
- Rev. 06/09
- Fillable fields
- 26
- Pages
- 2
- Official source
- U.S. Courts form page
- Checked
- October 20, 2026
AO 110: Subpoena to Testify Before Grand Jury
AO 110, Subpoena to Testify Before Grand Jury, is a United States District Court form from the U.S. Courts. The U.S. Courts page lists it under Subpoena Forms, effective on June 1, 2009, and the PDF prints the edition AO 110 (Rev. 06/09).
It is a subpoena the court issues, signed by the Clerk or Deputy Clerk, at the request of the United States attorney or assistant United States attorney whose name, address, e-mail and telephone number appear on page 1. It commands the person named to appear at a place, date and time to testify before the court's grand jury, and may list documents, electronically stored information or objects to bring. Page 2 is the Proof of Service, completed by the person who serves it. It is not a form a member of the public files.
This page explains the form in plain words and is not legal advice. You can fill it out free in your browser on this page and download the result without an account.
What's on AO 110
Command to appear
The command to appear in the United States district court at the time, date and place shown to testify before the court's grand jury. The form says that on arrival the person remains at the court until the judge or a court officer allows them to leave.
Place, date and time
Boxes for the place and the date and time of the appearance.
Items to bring
Space for documents, electronically stored information or objects to bring, left blank if not applicable.
Clerk and requesting attorney
The date, the Clerk or Deputy Clerk's signature, and the contact details of the United States attorney or assistant United States attorney who requests the subpoena.
Page 2: Proof of Service
Who the subpoena was for and the date received, whether it was served by delivering a copy to the named person or returned unexecuted and why, the server's declaration and signature, and space for additional information about attempted service.
How AO 110 is filled out
- 1
Caption and person named
The district is entered at the top and the name of the person the subpoena is addressed to goes on the To line.
- 2
Place, date and time
The place and the date and time of the grand jury appearance are filled in.
- 3
Items to bring, if any
Any documents, electronically stored information or objects to bring are listed. The form says to leave the space blank if not applicable.
- 4
Clerk signs, attorney listed
The Clerk or Deputy Clerk dates and signs, and the requesting United States attorney or assistant United States attorney's name, address, e-mail and telephone number are entered.
- 5
Server completes the Proof of Service
The server fills in who the subpoena was for and when it was received, checks served or returned unexecuted with the details, and signs the declaration under penalty of perjury with a printed name, title and address.
Why fill Form AO 110 on indox
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Court, service and formats
Court
The subpoena is captioned for a United States District Court, with the district named at the top, and the appearance is before that court's grand jury.
Service
Page 2 records service by delivering a copy to the named person, or that the subpoena was returned unexecuted and why. The server declares under penalty of perjury that the information is true.
Fees
The form does not print a fee.
Formats
The U.S. Courts page offers AO 110 as a PDF (271.04 KB). The PDF has Print, Save As, Add Attachment and Reset buttons.
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AO 89B
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AO 90
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AO 88
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Who uses AO 110?
The form names who signs it, who requests it, who receives it and who serves it.
Official sources and the blank
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Questions about Form AO 110
Who issues AO 110?
The form is signed by the Clerk or Deputy Clerk under CLERK OF COURT, and page 1 lists the United States attorney or assistant United States attorney who requests the subpoena. It is not a form a member of the public files.
What does AO 110 ask the person named to do?
The form commands the person named to appear in the United States district court at the time, date and place shown to testify before the court's grand jury, and says that on arrival they remain at the court until the judge or a court officer allows them to leave.
Does AO 110 ask for documents?
It can. Page 1 has a space for documents, electronically stored information or objects to bring, and the form says the space is blank if not applicable.
Who can be contacted about the subpoena?
Page 1 lists the name, address, e-mail and telephone number of the United States attorney, or assistant United States attorney, who requests the subpoena.
What is the Proof of Service on page 2?
It is where the person who received the subpoena for service records whether it was delivered to the named person or returned unexecuted, and signs a declaration under penalty of perjury that the information is true.
Is this page legal advice?
No. This page explains the form in plain words and is not legal advice. The page does not say what a person named in a subpoena should do.