Block Communications (also known as Blade Communications) is an American privately held holding company of various assets, mainly in the print and broadcast media, based in Toledo, Ohio. The company was founded in 1900 in New York City when Paul Block, a German-Jewish immigrant who came to the United States fifteen years prior, formed an ad representation firm for newspapers. Through the 1910s and 1920s, the Block empire grew to encompass many newspapers on the east coast of the US, however with the Great Depression in the 1930s came the loss of all but three properties: the ad representation firm, the Pittsburgh Post-Gazette, and the Toledo Blade (where Block eventually settled the company upon its purchase in 1927). After Block's death in 1941, his sons took over the company and later his grandchildren (one of whom, Allan Block, is company chairman).
- Pittsburgh Post-Gazette (Pittsburgh, Pennsylvania)
- Pittsburgh Press (Pittsburgh, Pennsylvania, online-only)
- The Blade (Toledo, Ohio)
- KTRV Nampa-Boise, Idaho (Ion Television/Movies!/qubo/Ion Life/Ion Shop)
- WAND Decatur, Illinois (NBC)
- WDRB Louisville, Kentucky (Fox/Antenna TV; operated by Block property Independence Television along with WMYO)
- WMYO Louisville, Kentucky (MyNetworkTV/Cozi TV)
- WBKI-TV Louisville, Kentucky (CW; owned by L.M. Communications, but operated by Block-owned WDRB/WMYO)
- WFND-LD Findlay, Ohio (Youtoo America/Daystar)
- WLIO Lima, Ohio (NBC)
On November 29, 2008, it was announced that Metro Video Productions, owners of Lima, Ohio low-powered network affiliates WOHL-CA (Fox/MyNetworkTV), WLQP-LP (ABC) and WLMO-LP (CBS), would sell these stations to West Central Ohio Broadcasting, Inc.; one of the company's heads, Allan J. Block, is the chairman of Block Communications, owner of WLIO. Those three stations have since consolidated at WLIO's studios and carry simulcasts of the station's newscasts, with WCOB holding the license interests of the stations.
- Buckeye CableSystem, Inc. https://web.archive.org/web/20061004005652/http://buckeyecablesystem.com/ (systems in Toledo, Ohio and Sandusky, Ohio, latter officially known as Erie County Cablevision)
- Buckeye Express (High Speed Internet) https://web.archive.org/web/20061004065011/http://buckeye-express.com/
- Buckeye Access (Dial up Internet) https://web.archive.org/web/20061004030803/http://buckeye-access.com/
- MaxxSouth Broadband
Competitive Local Exchange Carrier (CLEC)
- TeleSystem (formerly Buckeye Telesystem) http://www.telesystem.us
- Line Systems http://linesystems.com/ (Acquired July of 2014 and now a division of Telesystem) 
Cable Television Networks
- Buckeye Cable Sports Network
- HF100 Toledo, Ohio HomeFinder Channel 100 cable; (Operated by Block property Buckeye Cablevision)
- Metro Fiber & Cable Construction Company (a Toledo-based contractor of fiber optic installation)
- Newark Daily Advertiser (Now The Star Ledger), Newark, New Jersey (owned from 1832 to 1939)
- WIIC-TV, Pittsburgh, Pennsylvania (founded by the Pittsburgh Post-Gazette; now Cox-owned WPXI)
- WWSW radio, Pittsburgh (also founded by the Pittsburgh Post-Gazette; now iHeartMedia-owned WBGG)
- WLFI-TV, Lafayette, Indiana (sold to LIN TV Corporation; now owned by Heartland Media)
- Corporate Protection Services (Sold to Guardian Alarm Co. of Toledo  which later was sold to Asset Protection Services, Toledo, Ohio)
- The Monterey County Herald, traded to Scripps in exchange for the Pittsburgh Press; now owned by Digital First Media
- Toledo 5, Toledo, Ohio (CW cable; was operated by Block property Buckeye Cablevision; programming then went to the second sub-channel of WTVG)
- "Phipps flips Lima low-power cluster". Television Business Report. November 29, 2008. Archived from the original on June 1, 2009. Retrieved December 1, 2008.
- Sowinski, Greg (December 2, 2008). "WLIO owner buys Fox affiliate, other stations for $2.4 million". The Lima News. Retrieved December 2, 2008.
-  Archived January 8, 2008, at the Wayback Machine.