# EDGAR Filing Document

**Accession Number:** 0001286364
**File Stem:** 0001306349-23-000004
**Filing Date:** 2023-1
**Character Count:** 2820
**Document Hash:** 3b8faf27217c39927302698352c5276c
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001306349-23-000004.hdr.sgml**: 20230103

**ACCESSION NUMBER**: 0001306349-23-000004

**CONFORMED SUBMISSION TYPE**: 497J

**PUBLIC DOCUMENT COUNT**: 1

**FILED AS OF DATE**: 20230103

**DATE AS OF CHANGE**: 20230103

**EFFECTIVENESS DATE**: 20230103

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** PIONEER SHORT TERM INCOME FUND
- **CENTRAL INDEX KEY:** 0001286364
- **IRS NUMBER:** 562451408
- **FISCAL YEAR END:** 0831

**FILING VALUES:**
- **FORM TYPE:** 497J
- **SEC ACT:** 1933 Act
- **SEC FILE NUMBER:** 333-114423
- **FILM NUMBER:** 23501386

**BUSINESS ADDRESS:**
- **STREET 1:** 60 STATE STREET
- **STREET 2:** 5TH FLOOR
- **CITY:** BOSTON
- **STATE:** MA
- **ZIP:** 02109
- **BUSINESS PHONE:** 617-742-7825

**MAIL ADDRESS:**
- **STREET 1:** 60 STATE STREET
- **STREET 2:** 5TH FLOOR
- **CITY:** BOSTON
- **STATE:** MA
- **ZIP:** 02109

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** PIONEER SHORT TERM BOND FUND
- **DATE OF NAME CHANGE:** 20040407

## Series and Classes Contracts Data

### Pioneer Short Term Income Fund (Series ID: S000010228)

| Class ID   | Class Name                                     | Ticker Symbol   |
|:---|:---|:---|
| C000028291 | Pioneer Short Term Income Fund: Class A        | STABX           |
| C000028293 | Pioneer Short Term Income Fund: Class C        | PSHCX           |
| C000028294 | Pioneer Short Term Income Fund: Class Y        | PSHYX           |
| C000129904 | Pioneer Short Term Income Fund: Class C2       | STIIX           |
| C000149629 | Pioneer Short Term Income Fund: Class K Shares | STIKX           |

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[LOGO Amundi US]

January 3, 2023

VIA ELECTRONIC TRANSMISSION
---------------------------

Securities and Exchange Commission
Division of Investment Management
100 F Street, NE
Washington, DC  20549

Re:  Pioneer Short Term Income Fund (the "Fund")
     (File Nos. 333-114423 and 811-21558)
     CIK No.   0001286364

Ladies and Gentlemen:

Pursuant to Rule 497(j) under the Securities Act of 1933, as amended,
we certify that the form of prospectus and statement of additional
information relating to Pioneer Short Term Income Fund, that would have been
filed under paragraph (c) of Rule 497, do not differ from that contained in
Post-Effective Amendment No. 33 to the Fund's registration statement on
Form N-1A, filed electronically with the Securities and Exchange Commission
on December 22, 2022 (SEC Accession No. 0001193125-22-310896).

If you have any questions or comments concerning the foregoing certification,
please contact me at (617) 422-4695.

Very truly yours,

/s/ Thomas Reyes
    ---------------------
    Thomas Reyes
    Assistant Secretary

cc:  Christopher J. Kelley, Esq.
     Jeremy B. Kantrowitz, Esq.

Amundi Asset Management US, Inc.
60 State Street
Boston, MA  02109-1820

```