Exhibit 99.1

MARTIN MIDSTREAM PARTNERS
TO ISSUE FIRST QUARTER 2010 RESULTS
AND HOLD INVESTORS’ CONFERENCE CALL

     KILGORE, Texas, April 30, 2010/Globe Newswire/ — Martin Midstream Partners L.P. (Nasdaq: MMLP) announced today that it plans to publicly release its financial results for the first quarter ended March 31, 2010 after the market closes on Wednesday, May 5, 2010.

     In addition, MMLP intends to file its quarterly report on Form 10-Q for the quarter ended March 31, 2010 after the market closes on Wednesday, May 5, 2010.

     An investors’ conference call to review the first quarter results will be held on Thursday, May 6, 2010, at 8:00 a.m. Central Time. The conference call can be accessed by calling (877) 878-2695. An audio replay of the conference call will be available by calling (800) 642-1687 from 10:30 a.m. Central Time on May 6, 2010 through 11:59 p.m. Central Time on May 20, 2010. The access code for the conference call and the audio replay is Conference ID No. 72968522. The audio replay of the conference call will also be archived on MMLP’s website at www.martinmidstream.com.

     During the conference call, management will discuss certain non-generally accepted accounting principle financial measures for which reconciliations to the most directly comparable GAAP financial measures will be provided in MMLP’s announcement concerning its financial results for the first quarter 2010 and will be available on the investor relations page of MMLP’s website.

About Martin Midstream Partners

     Martin Midstream Partners is a publicly traded limited partnership with a diverse set of operations focused primarily in the United States Gulf Coast region. MMLP’s primary business lines include: terminalling and storage services for petroleum products and by-products; natural gas gathering, processing and NGL distribution; sulfur and sulfur-based products processing, manufacturing, marketing and distribution; and marine transportation services for petroleum products and by-products.

Forward-Looking Statements

     Statements about Martin Midstream Partners’ outlook and all other statements in this release other than historical facts are forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995. These forward-looking statements and all references to financial estimates rely on a number of assumptions concerning future events and are subject to a number of uncertainties and other factors, many of which are outside its control, which could cause actual results to differ materially from such statements. While MMLP believes that the assumptions concerning future events are reasonable, it cautions that there are inherent difficulties in anticipating or predicting certain important factors. A discussion of these factors, including risks and uncertainties, is set forth in MMLP’s annual and quarterly reports filed from time to time with the Securities and Exchange Commission. Martin Midstream Partners disclaims any intention or obligation to revise any forward-looking statements, including financial estimates, whether as a result of new information, future events, or otherwise.

Additional information concerning Martin Midstream Partners is available on its website at www.martinmidstream.com, or

Joe McCreery,
Vice President — Finance & Head of Investor Relations,
Martin Midstream Partners L.P.
Phone: (903) 812-7989
joe.mccreery@martinmlp.com