| 793 | Transmission Control ProtocolJ. Postel · obsoleted by RFC 9293 | Internet Standard | September 1981 |
| 1122 | Requirements for Internet Hosts - Communication LayersR. Braden, Ed. | Internet Standard | October 1989 |
| 1191 | Path MTU discoveryJ. Mogul, S. Deering | Draft Standard | November 1990 |
| 1379 | Extending TCP for Transactions -- ConceptsR. Braden · obsoleted by RFC 6247 | Historic | November 1992 |
| 1644 | T/TCP -- TCP Extensions for Transactions Functional SpecificationR. Braden · obsoleted by RFC 6247 | Historic | July 1994 |
| 2001 | TCP Slow Start, Congestion Avoidance, Fast Retransmit, and Fast Recovery AlgorithmsW. Stevens · obsoleted by RFC 2581 | Proposed Standard | January 1997 |
| 2119 | Key words for use in RFCs to Indicate Requirement LevelsS. Bradner | Best Current Practice | March 1997 |
| 2140 | TCP Control Block InterdependenceJ. Touch · obsoleted by RFC 9040 | Informational | April 1997 |
| 2414 | Increasing TCP's Initial WindowM. Allman, S. Floyd, C. Partridge · obsoleted by RFC 3390 | Experimental | September 1998 |
| 2663 | IP Network Address Translator (NAT) Terminology and ConsiderationsP. Srisuresh, M. Holdrege | Informational | August 1999 |
| 3124 | The Congestion ManagerH. Balakrishnan, S. Seshan | Proposed Standard | June 2001 |
| 3390 | Increasing TCP's Initial WindowM. Allman, S. Floyd, C. Partridge | Proposed Standard | November 2002 |
| 3692 | Assigning Experimental and Testing Numbers Considered UsefulT. Narten | Best Current Practice | January 2004 |
| 4340 | Datagram Congestion Control Protocol (DCCP)E. Kohler, M. Handley, S. Floyd | Proposed Standard | March 2006 |
| 4821 | Packetization Layer Path MTU DiscoveryM. Mathis, J. Heffner | Proposed Standard | March 2007 |
| 4960 | Stream Control Transmission ProtocolR. Stewart, Ed. · obsoleted by RFC 9260 | Proposed Standard | September 2007 |
| 5681 | TCP Congestion ControlM. Allman, V. Paxson, E. Blanton | Draft Standard | September 2009 |
| 5925 | The TCP Authentication OptionJ. Touch, A. Mankin, R. Bonica | Proposed Standard | June 2010 |
| 6298 | Computing TCP's Retransmission TimerV. Paxson, M. Allman, J. Chu, M. Sargent | Proposed Standard | June 2011 |
| 6437 | IPv6 Flow Label SpecificationS. Amante, B. Carpenter, S. Jiang, J. Rajahalme | Proposed Standard | November 2011 |
| 6691 | TCP Options and Maximum Segment Size (MSS)D. Borman · obsoleted by RFC 9293 | Informational | July 2012 |
| 6928 | Increasing TCP's Initial WindowJ. Chu, N. Dukkipati, Y. Cheng, M. Mathis | Experimental | April 2013 |
| 7231 | Hypertext Transfer Protocol (HTTP/1.1): Semantics and ContentR. Fielding, Ed., J. Reschke, Ed. · obsoleted by RFC 9110 | Proposed Standard | June 2014 |
| 7323 | TCP Extensions for High PerformanceD. Borman, B. Braden, V. Jacobson, R. Scheffenegger, Ed. | Proposed Standard | September 2014 |
| 7413 | TCP Fast OpenY. Cheng, J. Chu, S. Radhakrishnan, A. Jain | Experimental | December 2014 |
| 7424 | Mechanisms for Optimizing Link Aggregation Group (LAG) and Equal-Cost Multipath (ECMP) Component Link Utilization in NetworksR. Krishnan, L. Yong, A. Ghanwani, N. So, B. Khasnabish | Informational | January 2015 |
| 7540 | Hypertext Transfer Protocol Version 2 (HTTP/2)M. Belshe, R. Peon, M. Thomson, Ed. · obsoleted by RFC 9113 | Proposed Standard | May 2015 |
| 7661 | Updating TCP to Support Rate-Limited TrafficG. Fairhurst, A. Sathiaseelan, R. Secchi | Experimental | October 2015 |
| 7841 | RFC Streams, Headers, and BoilerplatesJ. Halpern, Ed., L. Daigle, Ed., O. Kolkman, Ed. | Informational | May 2016 |
| 8174 | Ambiguity of Uppercase vs Lowercase in RFC 2119 Key WordsB. Leiba | Best Current Practice | May 2017 |
| 8201 | Path MTU Discovery for IP version 6J. McCann, S. Deering, J. Mogul, R. Hinden, Ed. | Internet Standard | July 2017 |
| 8684 | TCP Extensions for Multipath Operation with Multiple AddressesA. Ford, C. Raiciu, M. Handley, O. Bonaventure, C. Paasch | Proposed Standard | March 2020 |