The objective of this review was to examine the methods used to measure food insecurity (FI) globally, to inform considerations relating to adopting a novel, or reviewing an existing, FI measurement approach in developed countries. Considerations for measurement are examined with particular applicability to the United Kingdom (UK) which has recently announced adoption of the US Household Food Security Survey Module (HFSSM) as an indicator to facilitate annual FI monitoring. This study uses a Rapid Evidence Assessment (REA) methodological approach to systematically review the literature on FI measurement and considers: geographical jurisdiction, methodological approach, sampling strategy, FI indicator(s) used, and implications for measurement. Results found that the majority of papers reviewed emanate from North America with the US Household Food Security Scale Module (HFSSM) and its various adapted forms being the most commonly reported indicator. FI is becoming a key concern within developed countries with a range of indicators being used to report on the severity of the issue. This paper provides a contribution to knowledge by: (i) identifying various approaches to FI measurement and commonalities of existing measurement approaches; (ii) providing a summation of the methodologies and findings of studies relating to FI measurement, and associated implications for measurement, (iii) providing a justification evidenced by the literature for the adoption of the HFSSM in the UK; and (iv) assessing the methodological usefulness of a REA review. Understanding the components of robust FI indicators and their effectiveness can help inform existing and novel measurement approaches to ensure that data collected on FI are meaningful and thereby useful to inform future policy work in this area. Paper type: Literature review Introduction Food insecurity (FI), defined as "a situation that exists when people lack secure access to sufficient amounts of safe and nutritious food for normal growth and development and an active and healthy life" [FAO 2017, 107], is often considered a developing world problem (Kneafsey et al. 2013). However, an increased research focus on identifying and understanding FI in developed countries such as Canada (e.g. Faught et al. 2017), Australia (e.g. Butcher et al. 2018), the United States (US) (e.g. Bowen et al. 2019) and the UK (e.g. Dowler and Lambie-Mumford 2015), has proved this phenomenon is not exclusive to developing nations. Despite acknowledging the gap between the scale and severity of those living in developing market economies who experience severe poverty, hunger and starvation, and those defined as food insecure who live in 'developed market economies', Riches (2011, 769) rationalises the importance of discussing food insecurity in developed market economies on the same level as that in developing countries as the statistics are cause for concern, with 49 million people in the US defined as food insecure, and 43 million at risk of food insecurity in the EU (Riches 2011).Originally, th...