This volume presents the proceedings of the SeventhInternational Workshop on Distributed Algorithms (WDAG 93),held in Lausanne, Switzerland, September 1993. It contains22 papers selected from 72 submissions. The selection wasbased on originality, quality, and relevance to the field ofdistributed computing: 6 papers are from Europe, 13 fromNorth America, and 3 from the Middle East.The papers discuss topics from all areas of distributedcomputing and their applications, including distributedalgorithms for control and communication, fault-tolerantdistributed algorithms, network protocols, algorithms formanaging replicated data, protocols for real-timedistributed systems, issues of asynchrony, synchrony andreal-time, mechanisms for security in distributed systems,techniques for the design and analysis of distributedalgorithms, distributed database techniques, distributedcombinatorial and optimization algorithms, and distributedgraph algorithms.